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john carlson

Have you heard the good news about shark populations? Shark population increases are cause for #OceanOptimism

Challenging the Conventional Narrative, Conservation, Conservation policy, Environmentalism, fisheries, marine science, Natural Science, Science, sharks, Underrepresented Issues in Marine Science and ConservationFebruary 28, 2018

Did you know that some shark populations have declined due to overfishing? Did you know that some once-declined shark populations have recovered? If you’re like my twitter followers, it’s likely that you’ve heard the bad news, but have not heard the good news. Why does this matter? It’s important to share bad news so that […]

Rumors of the lesser electric ray’s demise have been greatly exaggerated

fisheries, marine science, Natural Science, Science, sharks, UncategorizedFebruary 23, 2017

The lesser electric ray, a small sand-dwelling ray that lives from North Carolina to Brazil, has been considered one of the most endangered marine fish on Earth. A 2005 paper reported that 98% of these rays had been wiped out, a decline attributed to shrimp trawling bycatch. This paper resulted in these animals getting classified as IUCN Red List […]

Securing the Conservation of Sharks and Rays

Conservation, fisheries, marine science, Natural Science, Science, sharksOctober 10, 2011

At the 2nd International Marine Conservation Congress, Dr. Nick Dulvy and the IUCN Shark Specialist Group organized a special symposium called “Securing the Conservation of Sharks and Rays”. This symposium featured leading scientists, international policy experts, the founder of a creative non-profit, a National Geographic conservation photographer… and me. It was, without a doubt, the […]