Preface -- What is a marine mammal? -- Main groups of marine mammals -- Modern taxonomy of marine mammals -- How to look for marine mammals -- Natural history of marine mammals -- Conservation -- How ...

The relationship between whales and dolphins has long been shrouded in mystery. But, new research reveals that — despite their vast difference in size — these marine mammals often enjoy playful ...

Despite their underwater habitat, whales are mammals. Mammals are not solely terrestrial; some, including whales and dolphins, are fully aquatic the University of Michigan Museum of Zoology reports.

Humpback whales (Megaptera novaeangliae) like the ones pictured here with bottlenose dolphins (Tursiops truncatus) in Kona, Hawaii, appear to be more open to interacting with fellow cetaceans.