__________________ 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

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

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

Blue Whale

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

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

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

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

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

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

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

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

Blue Whale

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

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

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

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

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