NZ Sports Fishing Council rejects Govt action plan

In the Hauraki Gulf Forum’s agenda for August 23 (Page 177) the New Zealand Sports Fishing Council have rejected the Government’s response to Sea Change. This is a shame because although the plan is weak, short on detail and very late, it’s still the best proposal we have for slowing the decline of the Gulf.

Here are the points they make with some commentary from me. I have written them up for my own understanding. TL;DR The measurable cuts to recreational fishing were not matched by measurable cuts to commercial fishing. This is true but the lack of detail in the plan should be an opportunity for NZSFC to work with Government on scaling back commercial impacts through the development of the fisheries plan and defining the bottom impact fishing areas.


“The New Zealand Sport Fishing Council (NZSFC) rejects the Government’s Revitalising the Gulf proposal on the basis that it does not go far enough.”

‘Not going far enough’ is a poor reason to not to improve something.

“The vision and purpose of the Sea Change plan has been lost. A series of State of the Gulf reports chronicles a steady loss of abundance and diversity, and describes an emerging crisis that threatens the very functionality of the marine ecosystem within the Hauraki Gulf Marine Park.”

Agreed, the reports also show Marine Protection Areas (MPAs) are the best proven solution to minimising the impact of sports fishing.

“The Revitalising the Gulf plan is a compromised and biased proposal, an insult to all who gave so freely of their time over the years to contribute to a comprehensive plan.”

I understand how outraged they are but this is not a helpful or constructive statement.

“One of the key aspects agreed by the Sea Change contributors was that the plan was not to be cherry picked. The Revitalising the Gulf proposal does just that, thus destroying any good faith, goodwill achieved at the collaborative, negotiated and consensus driven Stakeholder Working Group process. A process that enjoyed widespread trust and support.”

I agree that the compromises made were not honoured. The very first principle is: “The Plan is developed as an integrated package to be implemented as a “whole”. Those implementing the Plan should not pick and choose between the proposed actions.” The plan was ‘non-statutory’ meaning not required or meaningful in law. This made it toothless, NZSFC’s rejection of the Government’s response is a significant failure. The Ministers decided that some commercial compromises were too high. The analysis of this is suspiciously missing from the Ministerial Advisory Committee report. The analysis needs to be better represented in future marine spatial planing processes.

“The only major aspects that made it through the officials’ vetting process is a series of ‘high protection’ areas (HPAs) lacking any ancillary management measures that would give them a chance of success. The Government would be wise to do nothing if that response is all that can be managed.”

The ancillary measures are SPAs (Seafloor Protection Areas) and a Hauraki Gulf Fisheries Management Plan (HGFMP) they know this, so it’s a weird thing to say. The proposed HPAs have been analysed and they are big enough to allow for lots of recreational fishing on the borders. The only threat to the success of the HPAs is customary take which DOC is working to define.

This entire exercise confirms that Government agencies are unable to work in concert for the benefit of the HGMP.

Not really, it would be more accurate to say that Fisheries NZ are a much stronger department with more staff and money, Fisheries NZ are “captured by industry” David Parker 2016.

“The tension between fisheries and conservation holds the Hauraki Gulf to ransom.

I don’t understand what the ransom is, but a network of Marine Protected Areas will increase abundance due to spillover. “Thirty six 30cm Tamureproduce the same amount of eggs as one 70cm Tamure.”Auckland University Research.

Fisheries giving up some areas but not any catch, which simply exacerbates the depletion and habitat loss in the remainder of the Marine Park.

I disagree, yes the HPAs will shift effort but they will increase abundance due to spill-over. The concerns around cuts to catch are valid but it would be more constructive to ask for a lower the Total Allowable Catch (TAC) in the HGFMP. Note that the HGFMP design should be ecosystems based, I would be interested in a critique of the HGFMP from an ecosystems perspective. Auckland University is well placed to do this but I imagine they will need a lot more detail that what has been published in the draft plan (page 107 of Revitalising the Gulf).

The Revitalising the Gulf plan is not about restoring the historic mauri of the HGMP or addressing future climate change.

I agree that it’s irresponsible for govt to exclude climate change from the HGFMP.

It is about clinging to fishing practices long known to destroy habitat while maintaining catches at historic levels, the same levels that have bought us to this point of depletion and degradation.

Here NZSFC are talking about commercial bottom impact fishing (trawling and dredging). Sea Change sought to phase out these destructive practices. They need to stop for the health of the Gulf to recover.

Large public investments were made in crafting a spatial plan that would reverse the decades-long trend of biodiversity loss. This investment has been squandered.

I think the plan should have been more science led. The weak decisions around commercial bottom impact fishing have dramatically lowered the impact of the plan. It’s frustrating that Government has not announced the bottom impact fishing areas so we can quantify how much has been ‘squandered’.

Sadly, the Government’s proposal is long on rhetoric, short on action and even shorter on logic. If Revitalising the Gulf proceeds, the HGMP will remain gridlocked with its governance via three Acts of Parliament and no effective management.

I think they just mean they want the fish that are currently going to commercial fisheries. I partially agree, each fish has more value when killed by a recreational fisher but it also cost more to catch both in terms of environmental impact (carbon emissions, resources mined for fancy boats, oil spilt, fish injured, etc) as well as cash spent.

“The Revitalising the Gulf plan is contrary to the clearly defined purposes of the HGMP Act, including the need to sustaining in perpetuity the life-supporting capacity of all the natural systems in the Gulf.

It would be more useful to say ‘Commercial fishing is contrary to HGMP Act purposes’. This is true, in 2015 National floated the idea of turning it into a recreational fishing park as an election bribe but then dropped the idea. Probably because lots of people, like the Hauraki Gulf Forum wanted the ecosystem to be valued above fishing. “The recreational fishing park is flawed because it’s being presented as a marine protected area when it’s not. Recreational fishing pressure is intense and, unchecked, has a major impact on environmental health.”Mayor John Tregidga, Chair, Hauraki Gulf Forum 2016.

It would be more useful if the HGMP Act had a statement like ‘Te Mana o te Wai’ that puts ecosystems first. Words like ‘sustain’ and ‘maintain’ are not useful for those seeking to increase abundance because fish populations can be legally managed at incredibly low levels.

“The Revitalising the Gulf plan is a win for industrial fishing interests and a loss for the people of the Hauraki Gulf and the marine environment.

I agree that the continuation of industrial bottom impact fishing is a big win for industry, I would love to know how they pulled that off. The government needs to be more transparent about the process and include recreational and environmental views in the discussions around bottom impact fishing areas and the development of the HGFMP. FNZ officers have told me this will not happen for dredging.

Reasons for rejecting. Our reasons for rejecting the Revitalising the Gulf plan include but are not limited to the following:

I agree with many of these points but I would not reject a plan that started eight years ago and won’t be acted for another three years. I would just start a new plan to address the remaining issues. Waikato Regional Council has started a planning process that could address their concerns.

Failure to fulfil the purposes of the HGMP Act

Yes, commercial uses are not mentioned.

Failure to remove bottom trawling and Danish seining. Failure to acknowledge the need to limit the effects of climate change by reducing the carbon emissions attributed to trawling and dredging in the Gulf.

Agreed and hot topic, Govt asleep at the wheel here.

“Failure to remove scallop dredging.”

Agreed.

“Failure to remove purse seining.

Agreed, the review of purse seining impacts is also missing, while the catch has dramatically increased.

Failure to create a separate Fisheries Management Area (FMA) for the Hauraki Gulf so precautionary catch limits can be applied and adjusted in a reasonable and responsible timeframe.

Officials need to better explain how they can operate a HGFMP with no FMA. It will be an area-based plan authorised under section 11A of the Fisheries Act 1996.

No attempt to address the need for improved management, of recreational fishing in the Hauraki Gulf Marine Park.

Yes a science led MPA network would really help here, along with much lower Maximum Sustainable Yield (MSY) and a raft of other changes suggested by NZSFC and environmental groups that have been ignored by FNZ for decades. As it stands the HGFMP is very business as usual, I would love to see NZSFC and other groups rewrite it.

Failure to take a holistic approach to marine protection, with no integrated, meaningful fisheries management changes alongside the HPAs.

Not a very specific request, I assume it’s the Rescue Fish Policy.

Failure to acknowledge the tension that will arise if Maori customary food gathering is permitted in ‘high protection areas’ while public fishing is prohibited.

I agree this is problematic, along with conflict between customary take and no-harm divers and snorkelers in HPAs.

The short sighted ‘protection at all costs’ bias that sees the far-sighted Special Management Area (SMA) concept discarded. The economy of such high value, low extraction fishing activity that currently occurs at the Mokohinau and Alderman Islands, and that would be permitted under the SMA concept, has been dismissed by officials ‘because it focuses on the management of use’.

I don’t understand this as the plan states the Government “will explore the Sea Change Plan’s Special Management Area (SMA) tool”.

There is no provision for an Economic Impact Assessment (EIA) of the Revitalising the Gulf plan.

EIAs are expensive, they did rough costs of the short term losses for the HPAs. They can’t do an EIA when they haven’t even decided where they might reduce some commercial fishing yet. A better criticism would be on the lack of plan in the plan.

There is no provision for an assessment of the social and cultural impacts of the Revitalising the Gulf plan.

This is a nice idea, I don’t know what it would look like, but could be included in the State of the Gulf reporting.

Failure to consider the effects of fishing on the marine ecosystem – While the Gulf snapper stock may be slowly rebuilding, the prospects are not good for crayfish, paua, scallops, mussels, tarakihi, John dory, gurnard, kahawai, trevally, porae and all the ‘red fish’ that have attracted so much attention recently.

Yes, these should be addressed in the HGFMP.

This post was featured on the Gulf Journal.

Nitrogen limits for New Zealand water

Nitrogen limits for drinking water

Over the last decade there has been a lot of media coverage on Nitrogen limits for New Zealand water. I have made this diagram to explain all the numbers from the perspective of a water drinking Aucklander (which I am).

Nitrogen limits for drinking water

References (Nitrate nitrogen mg/L)

The Hobson Bay shag colony 1977-1988

This 1987 article in Notornis on Aucklands largest Little shag colony (80-120 birds) is interesting as the colony slowly declined and has been lost for unknown reasons. With permission from the owner I have scanned in the authors (Michael Taylor) seven notebooks and uploaded them here for further study.

Little shag colony-Hobson Bay-Michael Taylor 1.pdf

Little shag colony-Hobson Bay-Michael Taylor 2.pdf

Little shag colony-Hobson Bay-Michael Taylor 3.pdf

Little shag colony-Hobson Bay-Michael Taylor 4.pdf

Little shag colony-Hobson Bay-Michael Taylor 5.pdf

Little shag colony-Hobson Bay-Michael Taylor 6.pdf

Little shag colony-Hobson Bay-Michael Taylor 7.pdf

A reef with more fishing gear than fish

On Friday I surveyed a reef at Shakespear Open Sanctuary on Whangaparāoa Peninsular. The tide was out at Te Haruhi Bay and I walked East towards the rocks. The beach was covered with protected shorebirds feeding in the sand and seagrass. Unfortunately the situation under the water was not so abundant with many keystone species missing.

I didn’t find any mussel beds or crayfish. This was no surprise as these species are unprotected and functionally extinct in the Gulf. But after two hours in the water with good visibility (5-6meters) I was surprised not to see a single Snapper, Leather jacket or Red moki. Not even a small one. The experience reminded me of the “empty cathedrals” metaphor used to describe our pest ridden forests which are empty of birdsong. In the marine version of this metaphor, fishers are the pests. The nearby cable zones mean that there should not be any commercial fishing in the area, there are nobody but recreational fishers to blame for the lack of fish.

It’s really disappointing that fishers have taken so much from the reef, even worse it was littered with fishing gear. I counted thirteen lead sinkers, so there must be hundreds scattered about. Lead is known to inhibit development in aquatic organisms. Plastic nylon ran through the kelp and I even found a fishing rod and makeshift Ikejime tool on the seafloor.

We need stronger regulation of recreational fishing to better manage reef environments.

Reef report here.

Revitalising the Gulf: Government action on the Sea Change Plan

Here is a summary of my read of the plan

Commercial bottom trawling and Danish seining. The Sea Change – Tai Timu Tai Pari Marine Spatial Plan 2016 (Sea Change) recommend these fishing methods be removed from the Gulf, this is inline with the Hauraki Gulf Forums (The Forum) goals. It is disappointing to see the Government push any decision to another committee, however they have suggested ‘most’ trawling will stop which is hopeful. Currently both practices impact about 77% of the Gulf.

Commercial dredging. Sea Change and the Forum also recommend this destructive practice be removed from the Gulf. No changes here with huge heavy machines scraping ~37% of the seafloor. In 2016 current Minister of Oceans David Parker said “Fisheries New Zealand has been captured by industry” it seems that has not changed with Mr Parker now heading up the portfolio. I am hoping the areas are reduced in the Fisheries Management Plan as most of the effort (~300 tows PA) currently happens around the Mercury Island Group.

Recreational dredging. Stopping this is a huge win for the Gulf, it opens up the entire Inner Gulf for restoration and I think it should have been the headline. However I think its unlikely that recreational fishers will think this is fair given commercial dredges have much more impact on the seafloor. The Inner Gulf is much more degraded by bottom impact fishing than the Outer Gulf with over 122 years of scraping. It’s really exciting that from 2024 it can begin the long process of recovery.

Marine Protected Areas. No take marine reserves go from 0.33% to 0.575% of the Gulf. This is a significant increase, but a pathetic overall result. Experimental ‘High Protection Areas’ with customary take by permit will attempt to protect 6.2% of the Gulf. These areas will not come into effect until the end of 2024. I expect we will have to wait at least seven years before we know if they work.

Fisheries Management Plan. Also pushed to another committee. I am deeply concerned that the changes above will not arrest the decline of the Gulf especially with looming climate change impacts. The entire approach is relying heavily on the Fisheries Management Plan which they claim will be ecosystem based.

Here is some detail on the Marine Protection Areas

Existing ‘No Take’ Marine Protected Areas in the Gulf:

Cape Rodney-Okakari Point Marine Reserve5.6km2
Te Whanganui A Hei (Cathedral Cove) Marine Reserve8.8km2
Long Bay-Okura Marine Reserve9.6km2
Motu-Manawa-Pollen Island Marine Reserve5km2
Te Matuku Marine Reserve6.9km2
Tāwharanui Marine Reserve4km2
TOTAL39.9km22

Sea Change ‘No Take’ extensions

Whanganui-a-Hei (Cathedral Cove) Marine Reserve+15 km2
Cape Rodney-Okakari Point (Leigh) Marine Reserve+14 km2
TOTAL29km2

The Hauraki Gulf Marine Park is 12,000km2 or 14,000 km2 of ocean depending on what you read, I’m choosing the smaller number.

Sea Change brings ‘No Take’ Marine Protection in the Gulf from 40km2 to 69km2 or from 0.33% to 0.575%.

The other 11 proposed High Protection areas are experimental in that they allow customary take by permit. They could meet the protection level required to be designated as MPAs, depending on how mana whenua choose to undertake their customary practises. They are:

Te Hauturu-o-Toi/Little Barrier Island195.4km2
Slipper Island/Whakahau13.5km2
Motukawao Group29.1km2
Firth of Thames and Rotoroa Island12.4 km2
Rangitoto Island and Motutapu Island10.7km2
Cape Colville26.7 km2
Mokohinau Islands118.5km2
Aldermen Islands133.9 km2
Aldermen Islands South155.0 km2
Kawau Bay40.4 km2
Tiritiri Matangi Island9.5 km2
TOTAL745.1km2

Or 6.2% of the Gulf.

The technical analysis of the proposals has assumed that these areas will be ’No Take’ but Government has decided to use special legislation to progress the ‘High Protection Areas’ rather than the Marine Reserves Act, there is no indication as to why. The areas which will be enabled through new legislation which will not be passed until 2024, this means the process which started in 2013 when completed will have taken 11 years. As the areas include customary take by permit, they are experimental. I don’t know how long we will then have to wait until we know if the experiment works or not. I am deeply concerned it’s not even close to enough protection to restore functioning ecosystems in the Gulf. The existing reserves and extensions plus the High Protection Areas only add up to 6.775% of the Gulf (excluding any seafloor protection like cable zones). The Government is putting a lot of faith in a Fisheries Management Plan that does not yet exist.

Errors (as I find them):

Page 39. “Since then, large scallop and oyster beds have largely replaced mussel beds in areas of habitat degradation.” The areas are dominated by mud, invasive species are the dominant epifauna.

Page 39. “Significantly increasing the amount of freshwater” sentence is not finished or doesn’t make sense.

Page 107. Climate change resilience excluded from Draft Fisheries Management Plan. Incredible that in 2021 a Govt department can still make a plan that excludes known climate change impacts.

UPDATE 23 July: MAC report released

The Ministerial Advisory Committee was not impressed with the first draft of the action plan, and it looks like many changes were made. However it is hard to tell what was changed as (like the action plan itself) it is very short on detail. The biggest criticism seems to be on the timings which I really agree with, Govt is moving incredibly slowly given the urgency of the problem.

The other general criticism is around resourcing. This paragraph well articulates my frustration in reading the ‘active restoration’ section of the report.

“Our major concern with this part of the strategy is a complete lack of reference to funding sources for restoration. While identifying regulatory barriers is mentioned, there is no mention of funding barriers, which are arguably just as significant. Active restoration efforts will require resources to implement and sources of funding should be identified.”

I am very pleased to see that Govt listened to one member of the MAC that questioned blanket customary take in the MPAs. I hope many iwi will support no-take in HPAs because they will want them to have maximum mauri, and only no-take MPAs are known to work – anything else is an experiment.

A lot of the rest of the criticism is around governance. I am not interested in ownership of the Gulf or the power dynamics… just environmental outcomes.

UPDATE 30 July: OIA on dredging areas refused

OIA response here. I have emailed the officer to ask for the survey results and a follow up meeting.

UPDATE 6 August 2022:

I got no response, so sent in a new OIA request for the data and survey. I then got a phone call. They are 6-8 weeks away from publishing the NIWA HGMP scallop fishery survey results (so my request for those will be declined). Aggregated Electronic Catch and Position Reporting (ER/GPR) data would be available if I provided a specific time frame and area. The data could be provided visually E.g. a heat map. I have done this.

I was also informed that the conversation around management options for the scallop fisheries is internal, management options will not be made public but will be provided to the Minister in several months.

UPDATE 6 September 2022

I received a response to my OIA request (Heatmap A, Heatmap B). I have added the dredged areas together and removed the proposed HPA’s, SPA’s and CPZ’s to calculate the percent of the HGMP that will be ‘frozen’ under the Governments plan to ‘revitalise the Gulf‘. More than 20% of the Gulf will remain heavily impacted by commercial dredging with no public input into the decision.

Update 28 September 2022:

The cost to create $774.1km2 of Marine Protection Areas in the plan (assuming they are no-take) to 11 commercial fish species was calculated to be $3,436,014. If we crudely scale up the figure for the gains to snapper / tamure alone based on this paper we get $209,710,000. Or a net gain of more than 200 million dollars! This is an incredible number, MPAs would not be adding so much money to commercial fisheries if they did not manage fish levels at such incredibly low numbers. Clearly Fisheries New Zealand should be making MPAs (at speed) all around NZ.

Update 28 October 2022:

Our painfully detailed submission on the marine protection proposals.

Wader population trends at Tahuna Torea

While researching my latest nature report to the Tahuna Torea Residents and Rangers I found some great bird counts in the reserve made in the 1980’s that had been entered on eBird. Unfortunately an oversight in the design of the website means you need to know a statistical programming language to extract population trend data for a location (however if you are able to stumble across an old checklist you can download the data). At the meeting Chris Barfoot supplied me with a brilliant 1993 report on the reserve which had a new set of data recorded by Micheal Taylor.

This new data adds valuable insight into the decline of waders in the Tamaki Estuary which the Tamaki Estuary Environmental Forum has recently published an article on. I have compiled the data and plotted it for key species below.

UPDATE 23 JUNE 2021. Here is an interesting snippet of history complied by the Howick & Pakuranga Times “Kuaka [bar tailed godwits] and red knots gather on the Cockle Bay estuary in thousands before flying to Korea and on to Alaska to breed each March, to return in September. In February-March they swoop over Point View ridges where farmers used shotguns before the birds were protected in 1941. They were plucked and preserved in their fat in ceramic jars.” Source: https://www.birdingnz.net/forum/viewtopic.php?f=3&t=11024

UPDATE August 2021. More data found in old journals. Graphs updated and presented to the Ōrākei Local Board.

Feeding our forests

I have begun doing some work with the Northern New Zealand Seabird Trust who invited me to come and help them with some field work on the Poor Knights Islands. My father had visited the Islands when he worked for DOC in the 1990’s, his stories about the reptile abundance really inspired me to do restoration work, and I jumped at the opportunity to go.

Landing on the Island is notoriously difficult and our first shot at it was delayed, we had to go back to Auckland to wait for better weather. The islands are surrounded by steep cliffs that made European habitation impractical, Māori left the area in the 1820’s. This means the island I visited has never had introduced mammals, not even kiore! I spent days cleaning my gear to get through the biosecurity requirements which are incredibly strict for good reason.

I have explored a few predator free islands including Hauturu / Little Barrier Island which has been described as New Zealand’s most intact ecosystem. However it was only cleared of rats in 2004. When I am photographing invertebrates at night in mainland sanctuaries or forests with predator control (like Tāwharanui Regional Park or parts of the Waitakere Ranges) I see one reptile every eight hours or so. On Hauturu / Little Barrier Island I see them every 20 minutes, but on the Poor Knights it was every two minutes! Bushbird numbers were lower than other islands, I expect this is because reptiles and birds compete over prey species. I wonder if reptile numbers on other islands might be slower to recover because they are preyed on by bushbirds. I reckon that the Poor Knights total reptile and bushbird biomass is much greater than the restored islands I have visited. One reason for this is that reptiles use less energy to hunt than bushbirds but the other reason might be because it has more seabirds.

While walking through the bush at night I would sometimes hear a crashing in the canopy followed by a soft thump on the ground. In an incredible navigational feat the seabirds somehow land only meters from their burrows. At night I heard Buller’s shearwater, grey-faced petrel, little penguins and diving petrel (fairy prion finish breeding in February). While monitoring birds at night I was showered with dirt by a Buller’s shearwater who was digging out a burrow. In my short time on the island I saw cave weta and three species of reptile using the burrows. Like a rock forest the burrows add another layer of habitat to the ecosystem. It was incredibly touching to see the care and compassion the researchers had for some of the chicks who were starving while waiting for their parents who often have to travel hundreds of kilometres to find enough food. The chicks who don’t make it die in their burrows and are eaten by many invertebrates, the invertebrates in turn become reptile or bushbird food. The soil on the island looked thick and rich, when it rains nutrients are bought down into the small but famous marine reserve which is teaming with life.

I was only on the island for three nights but I was very fortunate to experience a pristine ridge to reef ecosystem. Seabirds are incredible ecosystem engineers who were an integral part of New Zealand’s inland forests for millions of years. Communities are making small efforts to bring seabirds back to predator free island and mainland sites with no control over seabird food sources. If we really want intact ecosystems we will have to make sure our oceans have enough food for seabirds to feed our forests.

Pakiri horse mussel beds

For the last eight years I have been working on restoring green-lipped mussel (perna canaliculus) beds in the Hauraki Gulf. The main reason we started with that species was that there is a commercial supply. However there is a bigger native mussel that has even more potential than green-lipped mussels, both as a habitat and water cleaner. 

Horse mussels / Hururoa (atrina zelandica) are huge pumps, they are more than twice as big as green-lipped mussels (up to 400 mm in length) but have fragile shells which are vulnerable to fishing gear. They also  don’t move (unliked green-lipped mussels) and are sensitive to changes in substrate.

Last century horse mussel beds were some of the best fishing spots in the Hauraki Gulf. I regularly ask divers about horse mussels; Where did you see them? How dense was the bed? etc. There are spots with horse mussel in the Gulf but I don’t know of any significant beds left, if you do, please let me know about them.

I was recently sent these images of a stunning horse mussel bed in Pakiri.  They are from a report titled “Mangawhai – Pakiri Sand Study, Module 2: Technical Report, Marine Sands” by NIWA 1996. They show a large and dense horse mussel bed that has since been destroyed by sand mining. The beds ran the whole length of the embayment in depths of 15 -20m. I am posting them here to show the kind of seafloor we could have, if we treated it better.

We don’t yet understand the horse mussel lifecycle or what species / substates might attract juveniles. It’s interesting to note: presence of finger sponge and branching red algae, the hard edge to the bed and the way some of the shells align.

Overseas there have been attempts at restoring similar species (photos below). Seachange called for the “Initiation of a horse mussel restoration programme, with an initial focus on the Mahurangi and Whangapoua harbours.” But we could look at restoring any of the sites with historic beds. Wouldn’t it be awesome if we stopped smashing the seafloor, and bought back these giant pumps to clean the water, and create homes for fish.