The new shark belongs to the genus Phoebodus, which until now consisted only of tooth remains, and represents a previously unknown species now named Phoebodus saidselachus. 

The intricately patterned fluorescence of catsharks comes from tryptophan metabolites produced in certain skin cells.

Normally I use this blog to explain other groups’ science, but there is cool science happening right here at SRI, and some of it takes place in the sparkling blue waters of the Mexican Caribbean. We’ve just wrapped up three back to back whale shark research expeditions, focusing on photo-identification of these animals using their spot patterns.

One of the most difficult tasks in shark conservation is estimating population numbers, particularly for the large pelagic sharks that spend much of their time out of sight. For animals such as white sharks, where protection is controversial because of the public fear associated with shark bites, population assessments are even more critical.