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Marine Life & Conservation

Shark Trust calls for global shark citizen scientists

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Never let a shark sighting go to waste!

The Shark Trust has launched a new smartphone app that makes it simple for everyone to get involved in shark science and conservation. The new app brings together five citizen science projects into one place, allowing users to report: shark sightings, eggcase finds, Basking Shark observations, angling catches, and incidents of shark entanglement with marine litter.

Through these projects, anyone with an interest in sharks, skates and rays can contribute to important research and have a lot of fun along the way. The findings can be submitted from anywhere in the world and will help scientists by providing a range of vital data from some of the 1200+ species of sharks, skates and rays that swim in our ocean.

As users submit their findings across the five citizen science projects, they will build a logbook of their research contributions. These are saved in their profile and shared with the wider community, so users can see what other people have recently been discovering.

Alongside this important citizen science aspect, there are also 50 collectible shark cards to unlock: 30 bronze cards, 15 silver cards, and five gold cards. Submitting to any of the projects unlocks a card at random, so you never know what you’re going to find!

Shark Trust App for Great Eggcase Hunt: Image by James Harris

The Shark Trust’s flagship citizen science project, the Great Eggcase Hunt, which encourages the public to find the empty eggcases (or mermaid’s purses) of sharks and skate on the beach or submit those seen developing in situ, is celebrating its 20th anniversary this year.

Senior Conservation Officer Cat Gordon says “We’re really excited to be celebrating the Great Eggcase Hunt’s 20th anniversary this year! As part of the celebrations, we’re releasing this brand-new citizen science app, hosting a public evening event, and planning a special edition of the Trust’s membership magazine Shark Focus. The project has grown substantially since 2003, when we received just 128 records in the first year, to having a staggering 50,212 individual eggcases recorded in 2022 alone! In total, we’ve received over 370,000 eggcases since the project began, and we hope the app inspires even more people to get out and about in search of mermaid’s purses!

The Great Eggcase Hunt element of the app features eggcases from species which can be found in the Northeast Atlantic, as well as those in Australia (working in partnership with the Commonwealth Scientific and Industrial Research Organisation). In time we will add identification materials from more regions, but until then, records can still be submitted from outside these areas. This app replaces the previous Great Eggcase Hunt app which was launched in 2014 – so if you previously used that then please delete it and download the new version!

If you are interested in sharks, skates and rays and want to help contribute towards research and conservation, the Shark Trust citizen science app is for you. Everyone from the occasional beachgoer to seasoned divers and anglers can get involved.

Paul Cox, Shark Trust CEO, says “For a while we’ve wanted to make it easier and more fun for people to identify and record their sightings. Thanks to a generous donation from Animal Friends Pet Insurance, we’ve been able to create this great tool with local gamification specialists, Kazow Games. We’re really excited to get this app out into the world and start to see more recorders getting involved with our projects.”

Search for ‘Shark Trust’ in the relevant app store, download the app today, and start recording your findings. We are already working on some exciting updates and are still welcoming feedback, so if you have opportunity to try it out, please let us know what you think!

Let’s build a global community of citizen scientists who can help protect these incredible animals together!

Find out more on the Shark Trust website.

Header image: James Harris

Nick and Caroline (Frogfish Photography) are a married couple of conservation driven underwater photo-journalists and authors. Both have honours degrees from Manchester University, in Environmental Biology and Biology respectively, with Nick being a Fellow of the Royal Photographic Society, a former high school science teacher with a DipEd in Teaching Studies. Caroline has an MSc in Animal Behaviour specializing in Caribbean Ecology. They are multiple award-winning photographers and along with 4 published books, feature regularly in the diving, wildlife and international press They are the Underwater Photography and Deputy Editors at Scubaverse and Dive Travel Adventures. Winners of the Caribbean Tourism Organization Photo-journalist of the Year for a feature on Shark Diving in The Bahamas, and they have been placed in every year they have entered.Nick and Caroline regularly use their free time to visit schools, both in the UK and on their travels, to discuss the important issues of marine conservation, sharks and plastic pollution. They are ambassadors for Sharks4Kids and founders of SeaStraw. They are Dive Ambassadors for The Islands of The Bahamas and are supported by Mares, Paralenz, Nauticam and Olympus. To find out more visit www.frogfishphotography.com

Marine Life & Conservation

Make Every Dive Count

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The Shark Trust Great Shark Snapshot is back for its 4th year! And this time the Shark Trust are asking you to Make Every Dive Count!

The last week of July will see the return of the Shark Trust’s citizen science initiative: The Great Shark Snapshot. It encourages divers and snorkellers, all around the world, to record the sharks and rays that they see. This year it takes place between the 19th and 27th July. Get ready to dive in!

The event is back for its 4th year, and it is happening in “Shark Month”, more commonly known as July! To coincide with a series of events that celebrate all things shark and ray, including Shark Week and the 50th anniversary of Jaws.

Divers, clubs, centres, charter boats and liveaboards are all encouraged to show their support by organising dives and events throughout the week. As well as gathering vital data, the event will provide a chance to celebrate the incredible shark and ray species that live in our ocean.

Information about the species and numbers of sharks and rays the participants find over the week will be added to the Shark Trust’s Shark Log. This global shark census will, over time, allow shark scientists to build a picture of species distribution and any changes that occur

Caroline Robertson-Brown, Marketing Manager at the Shark Trust said “It is great to see this popular citizen science event back for its 4th year. We are asking divers to Make Every Dive Count this year. To identify. Count and Record every shark, ray and eggcase they see during the week-long event. To organise dives especially to take part. Whether you are diving your local dive site, or on a trip of a lifetime, we want divers to join in on the Great Shark Snapshot in July.”

It is easy to join in. Just go diving between 19th and 27th July and record every shark, ray, skate or eggcase that you and your dive group sees. If possible, take photos and some video footage too. Then make sure that you record your sightings on the Shark Trust Shark Log recordings website or by using the Shark Trust app.

This year we have created a digital guide that puts all the information you need in one handy online guide. Which can be downloaded from the website.

The Great Shark Snapshot is a way for divers to get together, go diving, and do something to help shark conservation. Why not dive in?

Find out more here: www.sharktrust.org/snapshot

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The Ocean Cleanup Launches 30 Cities Program to Cut Ocean Plastic Pollution from Rivers by One Third by 2030

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The Ocean Cleanup

The Ocean Cleanup, the international non-profit with the mission to rid the world’s oceans of plastic, has announced, at the UN Ocean Conference (UNOC), its plan to rapidly expand its work to intercept and remove ocean-bound plastic pollution.

The 30 Cities Program will scale the organization’s proven Interceptor™ solutions across 30 key cities in Asia and the Americas, aiming to eliminate up to one third of all plastic flowing from the world’s rivers into the ocean before the end of the decade.

This evolution follows five years of learning through pioneering deployments across 20 of the world’s most polluting rivers and represents a key next step in the organization’s mission and the global fight against ocean plastic pollution.

The Ocean Cleanup

With the 30 Cities Program, The Ocean Cleanup will transition from single river deployments to citywide solutions, tackling the main plastic emitting waterways within each selected city. This follows a key learning from deployments in Kingston, Jamaica, which showed it is possible to scale faster when projects encompass whole cities, as the same set of partners can be involved with all deployments.

To date, The Ocean Cleanup has already prevented 29 million kilograms of trash from reaching the ocean. The organization currently intercepts an estimated 1–3 percent of global river-borne plastic emissions. With the first 20 river deployments close to being fully operational, it is now poised to reduce the plastic pollution flowing into the ocean from rivers by up to a third.

“When we take on an entire city, instead of individual rivers, we can scale faster, reduce costs, and maximize impact,” said Boyan Slat, Founder and CEO of The Ocean Cleanup. “Our analysis shows that strategically deploying Interceptors across just 30 carefully chosen cities can stop up to a third of river plastic pollution worldwide. This is the next big leap toward our ultimate goal of a 90  percent reduction in global ocean plastic pollution.”

City-by-city: a Faster Path to Scaling

Using the latest scientific modeling and on the ground experience, The Ocean Cleanup identified 30 major plastic polluting coastal cities which include:

Panama City, Panama – First deployment to go live in the coming months.
Mumbai, India – Mapping of all waterways completed; preparations for first deployments underway.

Furthermore, the organization is developing plans to expand on its existing work to all polluting rivers in:

• Manila, Philippines; Montego Bay, Jamaica; Jakarta, Indonesia; Kuala Lumpur, Malaysia; Bangkok, Thailand and Los Angeles, U.S.A.

Other cities will be announced once the necessary partnerships and agreements are in place. Planning and fundraising activities are underway for all 30 cities. To realize these ambitious plans, the organization is currently also expanding its engineering and operational capacity.

Data Driven Restoration at Scale

Before Interceptors are deployed, each city project begins with an intensive analysis phase. Aerial drones, AI-powered image analysis, and GPS-tagged “dummy” plastics are used to chart every visible waterway and track how waste moves from streets to sea. These real-time insights guide optimal Interceptor placement and provide a public baseline against which progress can be measured.

Alongside intercepting new plastic, the 30 Cities Program will also remove debris from nearby coasts, mangroves, and coral reefs. This twin-track approach—shutting off the tap while clearing the legacy pollution—enables The Ocean Cleanup to achieve long-term impact, which includes the restoration of fish nursery habitats, boosting coastal tourism, and strengthening of natural storm surge defenses for local communities. Alongside local partners, the organization also advocates for improvements in waste management and awareness raising amongst communities.

The Ocean Cleanup

Completing the First 20 Rivers

While laying the foundation for the 30 Cities Program, The Ocean Cleanup is also nearing completion of its first 20 river projects. The next landmark achievement—expected as soon as the second half of this year—is in the western Caribbean, where the team aims to resolve the plastic pollution problem in the Gulf of Honduras by intercepting the trash feeding into this body of water.

A Stepping Stone Toward a 90  Percent Reduction

The 30 Cities Program represents the first major scaling step in The Ocean Cleanup’s journey to eliminate 90 percent of floating ocean plastic pollution. In parallel, efforts are continuing to remove plastic from the Great Pacific Garbage Patch. Whilst extraction operations are currently on hiatus, work to deploy cutting edge technologies to map the “hotspots”, or areas of intense plastic accumulation, in order to make future extractions more efficient and economical, is ongoing.

By combining river interception and coastal cleanup with its offshore cleanup systems targeting legacy pollution that’s already in the ocean, the organization is charting a path to turn off the tap and mop up the mess.

The Ocean Cleanup

About The Ocean Cleanup

The Ocean Cleanup is a nonprofit organization that develops and scales technologies to rid the oceans of plastic. By conducting extensive research, engineering scalable solutions, and partnering with governments, industry, and like-minded organizations, The Ocean Cleanup is working to stop plastic inflow via rivers and remove legacy plastic already polluting the oceans. As of June 2025, the non-profit has collected over 28 million kilograms (62 million pounds) of trash from aquatic ecosystems around the world. Founded in 2013 by Boyan Slat, The Ocean Cleanup now employs a multi-disciplined team of approximately 200 people. The organization is headquartered in Rotterdam, the Netherlands, with international operations in 10 countries. For more information, visit www.theoceancleanup.com.

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