marine conservation

When sharks are fished-out from coral reefs, fish body shapes change

Sounds kinda weird.. but studying nearly identical coral reef systems off Australia, my collaborators and I discovered something unusual on the reefs subjected to nearly exclusive fishing of sharks—fish with significantly smaller eyes and tails. This provides evidence of ...

The Unswerving Case for a Blue Economy

Policy debates about the growing body of evidence showing that our oceans are on the decline tend to overlook one important detail: Ailing seas hurt the economies of all nations—large and small, landlocked and maritime. That makes it vital ...

More, Bigger, Better Marine Conservation

Recently one of my peers referred to doing more conservation as addressing the problem of how to take marine protection to scale.  Covering nearly 70% of the planet and home to thousands of species of plants and animals, the ocean certainly ...

Can World Leaders Tame the Wild West of the High Seas?

Earlier this month, Indonesia announced the world’s largest sanctuary for manta rays. At the World Ocean Summit Tuesday, Peter Seligmann, the CEO of Conservation International, said the sanctuary “was not done out of good will, it was done out ...

World Ocean Summit Puts Marine Issues “On Global Agenda”

Hundreds of representatives from national governments, environmental organizations, academic institutions, and corporations have gathered in Half Moon Bay, California, for the World Ocean Summit February 24-26. As the sun rises over the hills to shed first light on the Pacific ...

Voyage to the Central American Dome, the Forgotten Sea

By Erick Ross Salazar, MarViva MarViva Foundation and Mission Blue have teamed up to seek protection for a high seas “hope spot” called the Central American Dome (CAD). A term coined by Mission Blue founder Sylvia Earle, hope spots are ...

Shark Tagging & Tracking: Separating Fact from Fiction

For several years now, I have been using electronic tagging to study the movements and behaviors of sharks. You can find out more about this research HERE and watch a video HERE.   I previously wrote about the state of ...

Electronic Tagging and Tracking Marine Animals Supports Conservation

Understanding and predicting animal movement is important as it is central to establishing effective management and conservation strategies [1]. Until relatively recently, studying the movements and behaviors of highly migratory marine species (turtles, sharks, whales, penguins, seals and billfish) have been ...

Shark Declines: Fuel for a Decade of Conservation Effort

Shark Declines: Fuel for a Decade of Conservation Effort by Austin J. Gallagher & Neil Hammerschlag     Scientists have been studying the population status of sharks for years and while the vulnerability, threatened status and biological importance of sharks has ...

The Bottom Line: Some Promising News for Bluefin Tuna

U.S. policymakers know they need to limit the number of Atlantic bluefin tuna caught and killed by surface longlines, which can stretch 40 miles with more than 750 baited hooks and float unattended for up to 18 hours. After all, the western ...

The Bottom Line: Some Promising News for Bluefin Tuna

U.S. policymakers know they need to limit the number of Atlantic bluefin tuna caught and killed by surface longlines, which can stretch 40 miles with more than 750 baited hooks and float unattended for up to 18 hours. After all, the western ...

Can New Shark-Resistant Nets Spur Responsible Aquaculture?

Around the world, more than a billion people rely on seafood for a significant part of their protein. And yet the United Nations has projected that by 2030, there will be a 40 million ton seafood shortage. Some experts have therefore been ...