Rescue Crew and Stranded Dolphins: IFAW personnel respond to common dolphins in Wellfleet, Mass., a global hotspot for mass strandings of dolphins. Partnerships and collaborations between researchers ...

Echolocation is a type of sonar used by two kinds of mammals, bats and whales. Bats are mammals that often fly in the dark. Some bats use sonar to navigate (find their way) and to find prey. Whales ...

Whales are a group of mammals that live in oceans. They include some of the largest animals on Earth. The blue whale is the biggest animal that has ever existed. Whales can be found in every ocean, ...

Few people sight the cryptic creatures swimming in Monterey Bay, but sonorous sperm whales abound if you listen. The chatter of undersea creatures fills the soundscape, and the clicks of sperm whales ...

Modern toothed whales have two major physical differences from their baleen brethren (apart from the whole teeth thing): they use echolocation, and they have asymmetrical skulls. It was thought that ...