__________________ Mammals

Marine Mammals  Mammals found in the ________________  Specially equipped for water environment ________________________ instead of feet Store _________________ of fat on their body Have ______________ that obtain oxygen and eliminate waste ___________________

Walrus

 Both ________________ have the tusks Up to 3’ long that are used to ________for food  Grouped with ______________________  _______________ measure to ________’ long and weigh ____________ lbs.

Walrus  __________ have young every ____ years Young live on mother’s ____________ for 2 years  Enemies __________________, killer whales, and ___________________ bears

Manatee

 Ranges from _________ coastal waters of __________________ to South America  Whale-like body is equipped with paddle- shaped ____________, a large ______ tail, and an upper lip covered with ___________  Can get as large as ____________ lbs. and as long as _________’

Manatee  Now classed as an ___________ species and protected by law Only one species now exists in North America  Cannot survive ________________________ below 46 degrees  Greatest threat comes from motorboat ______________ that injure them before they dive to safety

Blue Whale

 _______________ mammal to live on earth Reaches 100 feet ___________ and weighs as much as 150 ____________  Spend summers ______________ in arctic and goes ________________ in winter  Only enemy is the ______________ whale, other than humans

Blue Whale  Calf weighs 2 tons at birth  Whale milk is high in _________ and _________________ compared to the milk of land mammals Calf consumes up to _________ lbs. of milk every day until it is weaned at about 7 mos. Old Calf will weigh around ___________ tons and measure 52’ long

Sperm Whale

 Largest of the __________________ whales  50’ in length and has a large head and mouth  Feeds on _____________ and ____________  Found in deep water  Consume as much as a ____________ of food every day

Sperm Whale  Live together in ___________ or herds of females and calves  Bulls win ____________ positions by defeating their challengers and enter ____________ during breeding season  Cows are very ____________________ of their calves, and remain with them even when they die

Killer Whale

 _______________ and white in color  Largest of the ____________________  Grow as large as 31’ and weigh _____ tons  One of most feared predators in the ocean  Hunt together with others and prey upon other large marine mammals (__________, penguins, walrus, and other whales) Coordinated effort on ___________________

Common Dolphin

 Mature at length of 8’ and weigh up to ___________ lbs.  Long, thin _______________ distinguish themselves from porpoises  Catching _______________ makes up their diets

Common __________________  Often live together in large herds  Are considered to be ________________ animals  Often seen ____________ with boats and ships at sea

Harbor Porpoise

 Medium-sized _______________ fin, black body, and light-colored belly  ____________-shaped mouth differs, compared to dolphins  Eats several ___________ of fish and is preyed upon by killer whales and sharks

Marine Mammals

 Mammals found in the oceans  Specially equipped for water environment Flippers instead of feet Store layers of fat on their body Have lungs that they obtain oxygen and eliminate waste gases

Walrus

 Both sexes have the tusks Up to 3’ long that are used to dig for food  Grouped with seals  Bulls measure to 13’ long and weigh 3,700 lbs.

Walrus  Cows have young every 2 years Young live on mother’s milk for 2 years  Enemies include humans, killer whales, and polar bears

Manatee

 Ranges from warm coastal waters of Florida to South America  Whale-like body is equipped with paddle- shaped forelimbs, a large flat tail, and an upper lip covered with bristles  Can get as large as 1,200 lbs. and as long as 15’

Manatee  Now classed as an endangered species and protected by law Only one species now exists in North America  Cannot survive temperatures below 46 degrees  Greatest threat comes from motorboat props that injure them before they dive to safety

Blue Whale

 Largest mammal to live on earth Reaches 100 feet long and weighs as much as 150 tons  Spend summers feeding in arctic and goes south in winter  Only enemy is the killer whale, other than humans

Blue Whale  Calf weighs 2 tons at birth  Whale milk is high in fat and protein compared to the milk of land mammals Calf consumes up to 200 lbs. of milk every day until it is weaned at about 7 mos. Old Calf will weigh around 23 tons and measure 52’ long

Sperm Whale

 Largest of the toothed whales  50’ in length and has a large head and mouth  Feeds on squid and octopus  Found in deep water  Consume as much as a ton of food every day

Sperm Whale  Live together in pods or herds of females and calves  Bulls win dominant positions by defeating their challengers and enter herds during breeding season  Cows are very protective of their calves, and remain with them even when they die

Killer Whale

 Black and white in color  Largest of the dolphins  Grow as large as 31’ and weigh 8 tons  One of most feared predators in the ocean  Hunt together with others and prey upon other large marine mammals (seals, penguins, walrus, and other whales) Coordinated effort on prey

Common Dolphin

 Mature at length of 8’ and weigh up to 180 lbs.  Long, thin jaws distinguish themselves from porpoises  Catching fish makes up their diets

Common Dolphin  Often live together in large herds  Are considered to be intelligent animals  Often seen swimming with boats and ships at sea

Harbor Porpoise

 Medium-sized dorsal fin, black body, and light-colored belly  Flat-shaped mouth differs, compared to dolphins  Eats several types of fish and is preyed upon by killer whales and sharks