Presentation on theme: "WHALES 101 POWERPOINT created by Kristi M. Willis Photo Credits: Kenneth C. Balcolmb III, Ken Bohn/SEAWORLD, Carpenter family, Bob Cranston/Innerspace."— Presentation transcript:
WHALES 101 POWERPOINT created by Kristi M. Willis Photo Credits: Kenneth C. Balcolmb III, Ken Bohn/SEAWORLD, Carpenter family, Bob Cranston/Innerspace Visions, Paul Forestell, John Green, Dan McSweeney, Tony Martin, Planet Earth Pictures, Greg Spencer, Larry Foster, and Kristi M. Willis.
Mysticeti vs. Odontoceti * ~10 recognized species* ~70 recognized species * 2 blowholes * females larger than males * 1 blowhole * males larger than females * teeth are used to catch prey, but not for chewing * age determined by counting growth layers in waxy ear plug * age determined by counting growth layers in teeth the baleen whales the toothed whales * baleen plates act as a sieve to strain organisms from the water * undertake lengthy migrations between distinct breeding and feeding grounds * make smaller seasonal movements (inshore-offshore)
Basic Anatomy Rostrum 2 blowholes Caudal fin or fluke Pectoral fin Baleen plates Throat pleats of a mysticete Dorsal fin
MYSTICETES Baleen plates hang from upper jaw only and vary in size, color and shape. Gray whales have creamy-colored baleen.
Migaloo: the worlds only known albino humpback whale
Migaloo breaches and offers a rare look at his all-white body.
Basic Anatomy of an odontocete Dorsal fin 1 blowhole Rostrum Pectoral fins Caudal fin or fluke Teeth
ODONTOCETES Teeth come in all shapes and sizes, too. These are the conical shaped teeth of a killer whale.
Here is the single open blowhole of a bottlenose dolphin.
And lets not forget the Unicorn of the Sea the arctic Narwhal
Dolphins vs. Porpoises Prominent beak and melon Longer, more sleek bodies More tapered pectoral fins Cone-shaped teeth No true beak and melon is streamlined Short, stocky bodies Blunt pectoral fins Spade-shaped teeth …so what IS the difference, anyway?!
Sperm Whale Bottlenose Dolphin Harbor Porpoise Stejnegers Beaked Whale Bairds Beaked Whale Teeth are uniform throughout a cetaceans mouth because they are not specialized for purposes of chewing. They are strictly for catching prey or tearing flesh. Food is swallowed whole.