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Marine Life & Conservation

Oceans Campaign Director – Greenpeace USA



jh-blogJohn Hocevar is a trained marine biologist and an accomplished campaigner, explorer, and diver. John has helped win several major victories for marine conservation since becoming the director of Greenpeace’s oceans campaign in 2004.

Prior to joining Greenpeace, John was involved in several environmental projects including the Sea Turtle Nesting Project in Florida, Coral Cay Conservation in Belize, and as an environmental educator for Marine Science Under Sails in Florida. He is a graduate of the Green Corps organizing fellowship, a program dedicated to training the next generation of environmental leaders and previously worked at Corporate Accountability International. He is a co-founder and former executive director of Students for a Free Tibet.

I asked John if he remembered the defining moment when he knew conservation would play such a large part of his life.



When I was about 11, I found copies of Rachel Carson’s “Silent Spring” and “The Sea Around Us” on a visit to my grandparents in the Upper Peninsula of Michigan. I’m not sure what made me pick them up, but those books changed my life. As for the ocean, it was love at first sight. I grew up in eastern Connecticut, so my first trip to the beach was Rocky Neck State Park.


What do you feel are the most important issues facing our oceans today?


Unsustainable fishing, global warming, and ocean acidification are at the top of the list. We have come a long way in addressing pollution, but there are more plastic bags, bottles, and other throw away disposable items washing into the ocean than ever before.


For the past 40 years of my career as a wildlife filmmaker I have watched the oceans around me being polluted and over fished. Coral reefs have disappeared and other marine habitats ploughed up under the heavy weight of trawl nets. What realistic future do you see for our marine world?


To some extent, it is still up to us, but our window of opportunity is closing quickly. The scientific predictions are extremely grim: one of the largest waves of species extinctions in the history of our planet, the end of coral reefs as functional ecosystems by the end of the century, the total disappearance of sea ice in the Arctic in the summer, collapse of most commercial fisheries, and what Dr. Jeremy Jackson has referred to as “the rise of slime” – surges in populations of jellyfish, algae, and bacteria.

Some of these changes are going to be extremely hard to prevent at this stage, but these forecasts all assume that current trends continue. The sooner we act to reduce carbon emissions, end overfishing, and create large scale parks which can help increase the resilience of marine populations, the more hopeful our future will be.


I personally find that the majority of people I meet have little or no comprehension of the depleted state of our seas. It’s difficult for the majority to become involved while at the same time struggling to make a living, raise a family and pay the bills. What do you feel is the best way of addressing this?


We need to do a better job with showing people how the health of the oceans is connected to the fate of humanity. We live on a water planet; the oxygen in every second breath we take comes from phytoplankton in the ocean. Healthy fish populations feed a billion people and provide hundreds of thousands of jobs. Healthy mangrove forests and coral reefs help protect coastal communities from hurricanes and tsunamis. Tourism – beach vacations, diving, whale watching, and recreational fishing – is a multi-billion dollar industry.

Personal experience can be very powerful. The changes taking place in the ocean are invisible to people who don’t have a chance to look below the surface, so divers have a special responsibility to serve as ambassadors and share what we have seen – the good, the bad, and the ugly.


Greenpeace is a household name and I remember in my teenage years Greenpeace always being in the world news fighting for the protection of the great whales. There was a passion there we could get behind and support. I rarely hear any news these days unless of course I look for it. Having done that, it is obvious that Greenpeace is still a great force for world conservation. Do you think people know enough about what Greenpeace are doing now?


Greenpeace is doing much more work than when we started back in the early seventies; we now have three ships operating year round and offices in 40 countries. On any given day, we are issuing press releases, providing technical advice to policy makers, supporting scientific research, exposing illegal activities, challenging governments, and confronting destructive corporations.

That said, we rarely reach the level of media saturation we did in our early years. The biggest change is in the media environment itself. Instead of just three channels in the US, for example, cable and satellite TV provides people with hundreds of options. News is tailored to niche audiences, so people tend to seek out what they want to hear. Newspapers are in serious decline, with many closing their doors and nearly all of them laying off their environmental and investigative reporters. We still regularly get covered by major news outlets, but the effect is not the same as it once was.

This has made social media much more important, with conservationists and ocean lovers playing a key role in sharing our news with friends and family.


Can you recall your most successful campaign and tell us why it worked?


Some of my favourite victories took place before I started with Greenpeace: an end to incineration at sea, dumping nuclear waste, raw sewage, and industrial waste, and a ban on high seas drift nets, which killed tens of millions of birds, marine mammals, sharks, and other marine life each year. As with our work today, we achieved these victories by putting people at the scene of the crime and risking their lives to bring back stories and images that helped change the world.

In 2008, we put out our first report on the sustainability of the seafood sold at US supermarkets. All twenty we surveyed failed. In our latest edition, eighteen of those twenty retailers have now achieved passing marks. The most important part was just exposing the problem. Supermarkets competed with each other, either to get to the top of the ranking or at least to get off the bottom. Sometimes, as with Costco or Trader Joe’s, we made a more focused example out of the laggards, leading to improvements in those companies as well as in others who were watching nervously from the sidelines. And as is usually the case, it wasn’t just Greenpeace – other organizations were involved in this transition too, as were countless individuals who demanded change.


As commercial fisheries have nearly reached the end of profitability what and who do you feel is the biggest threat now?


Our hope is that we can learn from past mistakes in time to prevent the collapse of commercial fisheries. Policy makers in many countries are getting better about managing fisheries, but they are much too slow in shifting to the precautionary, ecosystem-based approach we need. To make sure we not only stop the decline but rebuild fish populations, we need a network of fully protected marine reserves.

In the meantime, unsustainable fishing remains the biggest threat. We are suffering from a combination of overfishing, destructive fishing, and pirate fishing. We are making progress on overfishing and pirate fishing, but unfortunately a large portion of seafood is caught with gear that either damages the habitat which sustains the fish or kills large numbers of other creatures as bycatch.


Could you sum up for us why it is so important to preserve our oceans and tell us how to best support its conservation in our daily lives?


As citizens of a water planet, we do not have the luxury of trashing our oceans without it coming back to haunt us. There is a very real cost – economic, cultural, and ecological – in going on with business as usual while we damage habitats, overfish stocks from the Arctic to the Southern Ocean, overheat the planet, acidify the ocean, and rely on unnecessary disposable plastic bags and water bottles.

Each of us can take small but important steps to help. Here are a few examples:

Switch to reusable shopping bags and water bottles, and energy efficient light bulbs and appliances.

If you drive, drive less – and make your next car a more fuel efficient model.

Seek out options to switch to renewable energy sources like wind and solar. Depending on where you are, it may be cost effective to install solar panels; you may also have the option to sign up with renewable energy providers.

At this stage, though, it is going to take more than the kind of changes we can make individually. We need to elect politicians who share our values, and hold them accountable, and we need to demand that corporations shift to more sustainable practices. We need new laws and regulations that reflect the scientific reality of our times.

That is no small feat, and getting there will require a little help from all of us. Join Greenpeace, or other environmental organizations that fit your values. Tell your elected officials what is important to you, and let your supermarkets and restaurants know that you want your seafood to be sustainable.

If you would like to know more about the work Greenpeace is doing, visit

Jeff Goodman is the Editor-at-Large for with responsibility for conservation and underwater videography. Jeff is an award-winning TV wildlife and underwater cameraman and film maker who lives in Cornwall, UK. With over 10,000 dives to his credit he has dived in many different environments around the world.

Marine Life & Conservation

Komodo National Park found to be Manta Hotspot



Through a collaborative effort between citizen divers, scientists from the Marine Megafauna Foundation (MMF), and Murdoch University, a new study reports a large number of manta rays in the waters of Komodo National Park, Indonesian, a UNESCO World Heritage Site, suggesting the area may hold the key to regional recovery of the threatened species.

Reef mantas (Mobula alfredi), which grow up to 5m, tend to reside and feed in shallow, coastal habitats. They also visit ‘cleaning stations’ on coral reefs to have parasites, or dead skin picked off by small fish. Courtship ‘trains’ are also observed adjacent to cleaning stations. In Komodo National Park, manta rays are present year-round, challenging the famous Komodo dragon as the most sought-after megafauna for visitors.

Scientists teamed up with the dive operator community to source identification photographs of manta rays visiting the parks’ waters and submit them to – a crowdsourced online database for mantas and other rays. Most of the photographs came from just four locations from over 20 commonly visited by tourism boats.

I was amazed by how receptive the local dive community was in helping collect much-needed data on these threatened animals,” said lead author Dr. Elitza Germanov. “With their support, we were able to identify over 1,000 individual manta rays from over 4,000 photographs.

People love manta rays—they are one of the most iconic animals in our oceans. The rise of the number of people engaging in SCUBA diving, snorkeling, and the advent of affordable underwater cameras meant that photos and videos taken by the public during their holidays could be used to quickly and affordably scale data collection,” said MMF co-founder and study co-author Dr. Andrea Marshall.

The photographs’ accompanying time and location data is used to construct sighting histories of individual manta rays, which can then be analyzed with statistical movement models. These models predict the likelihood that manta rays are inhabiting or traveling in between specific sites. The study’s results showed that some manta rays moved around the park and others as far as the Nusa Penida MPA (>450 km to the west), but overall, manta rays showed individual preferences for specific sites within the Park.

I found it very interesting how some manta rays appear to prefer spending their time in some sites more than others, even when sites are 5 km apart, which are short distances for manta rays,” said Dr. Elitza Germanov. “This means that manta rays which prefer sites where fishing activities continue to occur or that are more popular with tourism will endure greater impacts.”

Fishing activities have been prohibited in many coastal areas within Komodo NP since 1984, offering some protection to manta rays prior to the 2014 nationwide protection. However, due to illegal fishing activity and manta ray movements into heavily fished waters, manta rays continue to face a number of threats from fisheries. About 5% of Komodo’s manta rays have permanent injuries that are likely the result of encounters with fishing gear.

The popularity of tourism to these sites grew by 34% during the course of the study. An increase in human activity can negatively impact manta rays and their habitats. In 2019, the Komodo National Park Authority introduced limits on the number of boats and people that visit one of the most famous manta sites.

This study shows that the places where tourists commonly observe manta rays are important for the animals to feed, clean, and mate. This means that the Komodo National Park should create measures to limit the disturbance at these sites,” said Mr. Ande Kefi, an employee of the Komodo National Park involved with this study. “I hope that this study will encourage tourism operators to understand the need for the regulations already imposed and increase compliance.”

Despite Indonesia’s history with intensive manta ray fisheries, Komodo National Park still retains large manta ray aggregations that with careful ongoing management and threat reduction will benefit regional manta ray populations. The study highlights that marine protected areas that are large enough to host important manta ray habitats are a beneficial tool for manta ray conservation.

For more information about MMF visit their website here.

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Marine Life & Conservation

Blue Marine Foundation launches new partnership with Dutch Caribbean Nature Alliance



Ocean charity makes initial grant of $90,000 to marine parks on six Dutch Caribbean islands. Award will fund projects including coral protection, and training youth marine rangers.

Ocean conservation charity Blue Marine Foundation has announced it is awarding $90,000 in funding to support marine conservation in the Dutch Caribbean. A range of projects run by protected area management organisations on six islands will each receive a grant of $15,000. The funding is the first step in a longer-term partnership to support the islands and help secure sustainable financing through the Dutch Caribbean Nature Alliance (DCNA) Trust fund.

To improve ocean governance, Blue Marine uses a combination of top-down intervention and bottom-up project delivery to help local communities at the front line of conservation. It will work together with the DCNA to help marine-park organisations protect the unique and threatened biodiversity of the Dutch Caribbean.

The new partnership is an important development in the successful management of marine conservation parks in the Dutch Caribbean. The UK-based charity has established a small-grants fund to provide rapid access to support for critical conservation projects run by marine parks.

The individual projects and their local partners are:

Unique ecosystems on the islands are vulnerable to threats such as feral livestock causing sedimentation on reefs, and invasive species, including lionfish and coral diseases. They are also at risk from overfishing, climate change, coastal development, erosion and the build-up of harmful algae caused by waste water.

The islands of the Dutch Caribbean are also home to important “blue carbon” habitats – ocean ecosystems such as seagrasses, mangroves and other marine plants that suck up and lock away carbon from the earth’s atmosphere. Seagrass is so efficient at this it can capture and store carbon dioxide up to 35 times faster than tropical rainforests.  The management and protection of these blue carbon habitats is vital in the fight against climate change.

Current marine conservation measures in the islands include a 25,390 square km mammal and shark sanctuary- Yarari sanctuary- across the Exclusive Economic Zone of Bonaire, Saba and St Eustatius. All six islands have inshore Marine Protected Areas ranging in size from 10 to 60 sq km.

Blue Marine’s Senior Project Manager Jude Brown commented: “Having recently visited two of the islands, I witnessed first-hand how special this region is. Diving the waters off Saba I saw huge Tarpon swimming amongst shoals of blue tang, and hawksbill turtles feeding on the seagrass beds. I also witnessed the challenges these islands are facing from coral disease to issues with coastal development. It is an exciting opportunity to work in the Dutch Caribbean, bringing expertise and funding from Blue Marine to join with the wealth of knowledge already on the islands, to work together to protect the important marine life arounds these islands.”

Tadzio Bervoets, Director of the DNCA commented: “The Dutch Caribbean consists of the Windward Islands of St. Maarten, Saba, and St. Eustatius and the Leeward Islands of Aruba, Bonaire and Curaçao. The nature of the Dutch Caribbean contains the richest biodiversity in the Kingdom of the Netherlands. The diverse ecosystems are a magnet for tourism and at the same time the most important source of income for residents of the Dutch Caribbean. Nature on the islands is unique and important but it is also fragile. The coming week we will be in The Netherlands to present a Climate Action Plan for the Dutch Caribbean to emphasize the urgent need for a climate smart future for our islands.”

Photo: Coral reefs in the Dutch Caribbean- Photo credit: Naturepics: Y.+T. Kühnast- all rights reserved

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