Add Yahoo as a preferred source to see more of our stories on Google. How big they are: From 5 to 32 feet (1.5 to 10 meters) long, depending on the species Dolphins live in almost every ocean, except ...

Whales, dolphins and seals live in tight-knit societies that rival primate groups in complexity, and those same bonds are turning into superhighways for lethal infections. As scientists map how ...

The Marine Mammal Care Center, which has been struggling for nearly four months to keep pace with a toxic algae bloom that sickened and killed animals all along the California coast, celebrated the ...