Speartooth shark in Melbourne aquarium.

PORT ROPER (Australia)- Charles Darwin University (CDU) researchers and First Nations Yugul Mangi Rangers have discovered a new population of a rare and threatened Speartooth Sharks in the Northern Territory’s Roper River.  The Speartooth Shark or Glyphis glyphis is currently listed as Critically Endangered under Australia’s national environmental legislation, with a veryContinue Reading

Gulper sharks captured for their liver oil and meat in deepwater shark fisheries off the Andaman Islands. Photo: Zoya Tyabli.

BURNABY (Canada)- One in seven species of deepwater sharks and rays are threatened with extinction due to overfishing, according to a new eight-year study released today in the journal Science. Specifically, the analysis found that sharks and rays are caught as incidental bycatch in fisheries targeting more commercially valuable species.Continue Reading

GENEVA (Switzerland)- Scientists have sequenced the genomes of two endangered sharks. Low genetic diversity and signs of inbreeding ring alarm bells for great hammerheads, but there may be hope for shortfin makos that showed higher genetic diversity and limited inbreeding. The first chromosome level genome sequences for great hammerhead andContinue Reading

How do sharks and tuna react to being caught by hook-and-line and then released? Well, they swim twice as fast as their normal cruising speed, according tot researchers at The Royal Society.  Sharks and tuna  normally swim at elevated speeds relative to cruising speeds only during strenuous activity, such asContinue Reading