"Field surveys in neighboring regions ... could help delineate its range." Scientists make astonishing rediscovery on the ...
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, ...
At up to 450 pounds and eight feet in length, the Amazon dolphin, or boto, is the largest of the four known species of river dolphin. The others live in the Ganges in India and the Indus in ...