A miles-long cluster of dolphins has been filmed, forming an unusual “super pod” of more than 1,500 of the creatures.

More species are declining than are improving, but some bright spots show that conservation efforts can bring species back.

Risso’s dolphins typically travel in groups of only 10 to 30 animals, according to the National Oceanic and Atmospheric ...

A miles-long cluster of dolphins was filmed leaping, gliding and cavorting their way across Carmel Bay on the central coast ...