Sea Turtle Monitoring, Leatherbacks
Kayla Sargent
First Leatherback Tagged in the California ...

In September 2025, the collaborative Upwell and NOAA leatherback monitoring team tagged our first leatherback in the California Current since 2022! The adult male leatherback weighing 438 kg (almost 1,000 pounds) was fitted with satellite and acoustic tags to collect critical data on movements and habitat use. Read more about what Ricky has been up to since he was tagged in September.

First Leatherback Tagged in the California Current Since 2022
Kayla Sargent
Where do you spend your lost years, little ...

In late October, a collaborative team of researchers from Two Oceans Aquarium Foundation and Upwell took a boat into the swift Agulhas Current, the southwest boundary current of the Indian Ocean that runs down the east coast of South Africa. There, they released 12 tiny loggerhead turtles with satellite tags attached to their carapace (top shells) in an effort to understand how these turtles are using this oceanic highway. See where these turtles have traveled over their first weeks in the ocean!

Where do you spend your lost years, little turtle?
Kayla Sargent
Diving Into Underwater Photography with Nuno ...

Nuno Vasco Rodrigues is a Marine Biologist and researcher at MARE IPLeiria. He was named “Conservation Photographer of the Year” by Ocean Geographic Society in 2021. For the past three years, Nuno has photographed Upwell’s work tagging juvenile loggerhead turtles in the Azores Archipelago in partnership with the COSTA Project and the University of the Azores, which is part of Upwell’s Lost Years Initiative. Nuno took some time to chat with us about the highlights and challenges of documenting sea turtle releases underwater. 

Diving Into Underwater Photography with Nuno Vasco Rodrigues
Kayla Sargent
Researcher Interview: Analyzing Data from ...

With a team of collaborators, we tested new specially-designed prototypes of Lotek microsatellite tags on 160 juvenile sea turtles of four species in the North Atlantic. The data from these tags was published in a new article, "Novel Microsatellite Tags Hold Promise for Illuminating the Lost Years in Four Sea Turtle Species." We sat down with lead-author Tony Candela to talk about this article, his process as lead-author, and the important implications of these findings for the bio-logging community.

Researcher Interview: Analyzing Data from Microsatellite Tags on Juvenile Sea Turtles
Bycatch, Sea Turtle Tracking
Kayla Sargent
Leatherback Saved by Fisher-Researcher ...

When fishermen and researchers collaborate, they create opportunities to amplify efforts for the research and conservation of sea turtles. This past spring, Upwell participated in these efforts by providing a satellite tag for Liam Neythan, a leatherback sea turtle that was saved in Sinaloa, Mexico. Our collaborators, the fishers Edmundo Rafael Garcías Burgos and Mariano García Olivas, as well as Dr. Alan Zavala Norzagaray and the CIIDIR IPN Unidad Sinaloa are the key collaborators and heroes in this story.

Leatherback Saved by Fisher-Researcher Collaboration in Sinaloa

The Arrival

The Arrival

Arribada roughly translates to “arrival”, but in so many ways, it’s an understatement. Turtle nesting on Ostional Beach occurs year-round, but hits a peak in the rainy season between August and November. Each month on the last quarter of the full moon, olive ridley sea turtles gather off the coast of Ostional and prepare to lay their eggs en masse. The mass nesting of the arribada corresponds with the evening high tide, and for a few nights each month hundreds to thousands of sea turtles emerge from the sea to lay their eggs.

Engaging citizen scientists in the sailing community to promote sea turtle conservation

Engaging citizen scientists in the sailing community to promote sea turtle conservation

Inspired by Upwell’s collection of citizen science data to advance protections for sea turtles at sea, three biologists--informally dubbed “the turtle girls”--resolved to join the caravan of boats on the Baja Haha sailing rally to teach sailors and cruisers how to identify and report sea turtle sightings during the Baja Ha-Ha.

Building strong relationships with fishers in Sinaloa to promote responsible fishing

Building strong relationships with fishers in Sinaloa to promote responsible fishing

Sinaloa’s suripera fleet is collaborating with researchers to collect data on sea turtles and reduce bycatch in the shrimp fishery. Suripera fishers use the wind and tides to net blue shrimp in the Gulf of California.

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Leatherback Sea Turtles and Ecosystem Health in the California Current

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Leatherback Sea Turtles and Ecosystem Health in the California Current

Evaluating sea turtle health off the coast of Central California can tell us about environmental factors that pose threats not only to sea turtles but to the broader marine community.

Learning from sea turtle piggy-backers

Learning from sea turtle piggy-backers

Researchers collect barnacles from incidentally captured and stranded sea turtles to learn more about their habitat use. Live turtles are released directly into the sea following barnacle collection.

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Leatherbacks from above

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Leatherbacks from above

The leatherbacks have returned to the central California coast! In partnership with NOAA, Upwell is conducting aerial surveys to locate critically endangered leatherback turtles in California's waters. Learn more about graduate student, Sharon Hsu's first-hand experience as an Upwell Observer aboard these flights.

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Leatherback Sea Turtles as Sentinels for Ocean Health

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Leatherback Sea Turtles as Sentinels for Ocean Health

How do you weigh an adult leatherback sea turtle often likened to the size of a Volkswagen Bug?! Upwell’s Wildlife Veterinarian, Dr. Heather Harris, shares her innovative approach to measure the health of leatherback sea turtles during her recent field study in Florida.

How satellite tracking can help save endangered sea turtles

How satellite tracking can help save endangered sea turtles

Through satellite tracking data, we can identify critical inter-nesting, migration and foraging habitats throughout the migration range of East Pacific leatherbacks. This information is essential for leatherback conservation and more holistic transboundary management initiatives,

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The Plastic Effect: A first-hand account of how plastic is impacting sea turtles

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The Plastic Effect: A first-hand account of how plastic is impacting sea turtles

In 2015, Sean came face to face with one of the most insidious threats turtles face at sea: plastic. He was walking along Playa Ostional in Costa Rica with other sea turtle researchers when they spotted an olive ridley turtle with something protruding from its naris (more or less the word for a sea turtle’s nostril). As they approached the turtle, they discovered it was a piece of plastic.