Like Loch Ness in Scotland, the Shannon Estuary in Ireland has long been home to a fabled sea monster. Known as a Cathaigh — or Cata for short — the mysterious creature is rumored to lurk in the ...

The book "Marine Mammals of the World" states that humpback whales feed in polar waters and migrate up to 9,900 miles each year to tropical or subtropical waters to breed and give birth.

Federal wildlife officials say two humpback whales were recently freed of life-threatening entanglements in fishing lines in separate incidents off Maui.