North Atlantic right whales, dolphins spotted near Martha's Vineyard
Resident killer whales sometimes attack porpoises but never eat
Division of Aquatic Resources
Urgent call by global experts for our most vulnerable whales
Toothed whale - Wikipedia
False killer whale - Wikipedia
14 Most Endangered Whales, Porpoises, and Dolphins
14 Types of Dolphins and Their Pictures – Nature Blog Network
Only 10 vaquita porpoises are left, but hope remains for their
Dolphin facts and information - Whale and Dolphin Conservation