Migratory species don’t travel with a passport, but they cross borders all the time. This makes the animals’ conservation a uniquely challenging, international effort. That effort needs a lot of work, ...

A new evaluation of the state of the world's oceans has revealed that the number of fish species at risk of extinction could be five times higher than previously expected. According to the new ...

Tuna, opah, and billfishes such as marlins and swordfish are among the 0.1% of fish species that are warm-blooded. Evidence by an international team of researchers led by UC San Diego’s Scripps ...