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Pinnipeds of the World Family Otaridae The Eared Seals Hooker’s Sea Lion Range: New Zealand & the Auklands Diet: squid, octopus, fish, crab & mussels Population: 3,000 males measure between 2.0- 3.25 m in length and weigh 300- 450 kg

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Pinnipeds of the World


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pinnipeds of the world

Pinnipeds of the World

Family Otaridae

The Eared Seals

hooker s sea lion
Hooker’s Sea Lion
  • Range: New Zealand & the Auklands
  • Diet: squid, octopus, fish, crab & mussels
  • Population: 3,000
  • males measure between 2.0-3.25 m in length and weigh 300-450 kg
  • females measure 1.6-2 m in length and weigh up to 160 kg
hooker s sea lion3
Hooker’s Sea Lion
  • Facts: in the 1800’s they were hunted for their oil and leather
  • between 1995-97 an estimated >100 sea lions drowned annually in squid trawl nets
south american sea lion
South American Sea Lion
  • Range: E & W coasts of South American
  • Diet: squid, crustaceans, fish
  • Population: 257,000
  • males measure an average of 2.6 m long and weigh around 300 kg
  • females measure an average of

1.8-2 m long and weigh around

150 kg

south american sea lion5
South American Sea Lion
  • Facts: in the 1800’s they were hunted for their oil and leather
  • Conflict with fisheries throughout their range causes problems for South American sea lions including reduced fish stocks, killing by fishermen to avoid damage to nets, and they are often caught as bycatch in gillnets

and longlines, and entangled in

trawl nets.

californian sea lion
Californian Sea Lion
  • Range: West coast of N. Am, Sea of Japan, Galapagos Islands
  • Diet: squid, octopus, & fish
  • Population: 110,000
  • Males may reach 454 kg (average 390 kg) and 2.1 m in length
  • Females grow to 110 kg and up to 1.8 m in length
californian sea lion7
Californian Sea Lion
  • Facts: they also eat

salmon and in Japan are

killed because of competition.

  • Commonly used as trained seals
  • very social animals, and groups often rest closely packed together at favored haul-out sites on land, or float together on the ocean's surface in "rafts."
australian sea lion
Australian Sea Lion
  • Range: SW coast of Aus.
  • Diet: squid, fish, crayfish
  • Population: 6000
  • males measure between 2-2.5 m in length and weigh 250-300 kg
  • females measure between 1.3-1.8 m in length and weigh 61-104 kg
australian sea lion9
Australian Sea Lion
  • Goes 6 miles inland to feed
  • hunted for its hide and oil in

the 18th and 19th centuries before which its range extended as far as the islands in Bass Strait

  • unexplained dramatic fluctuations in pup mortality rates which may be endangering the species
stellar sea lion
Stellar Sea Lion
  • Range: Sea of Othotsk

& Alaska – California

  • Diet: squid, octopus, crabs, fish, & crabs
  • Population: 245,000
  • male is 300 cm and can weigh up to

1000 kg (largest 9.5 ft & 2200 lbs)

  • female is 250 cm and weighs 270 kg
stellar sea lion11
Stellar Sea Lion
  • Facts: too belligerent for circus
  • Reasons for decline in Alaska include: an increase in parasites and disease, predation by killer whales, nutritional stress caused by competition with humans or other species for food and/or changes in abundance, quality and distribution of prey, and environmental factors such as pollution.
northern fur seal
Northern Fur Seal
  • Range: ring northern

Pacific from Japan to California

  • Diet: fish and squid
  • Population: 1,840,000
  • Males are 2.1m in length and weigh

175-275kg

  • females are smaller at an average 1.4m in length and 30-50kg
northern fur seal14
Northern Fur Seal
  • Facts: in 1911, 200,000

killed by Russians for fur. Today 25,000 immature males harvested annually

  • signing in 1911 of the North Pacific Fur Seal Convention by the US, Japan, Russia and the UK (for Canada).
  • Among other provisions, the Convention banned the hunting of Northern fur seals at sea and restricted the killing on land to immature males
southern hemisphere fur seals
Southern Hemisphere Fur Seals

Range Diet Pop.

  • Cape Fur Seal

So. African SE coast Africa fish&squid 850,000

Australian W coast Aus “ 20,000

  • New Zealand New Zealand squid&octo 40,000
  • Juan Fernandez Archipelago fish,squid 1,000

near Chili & lobster

  • Galapagos Galapagos Is fish 40,000
southern hemisphere fur seals16
Southern Hemisphere Fur Seals

Diet Pop. Facts

  • Guadalupe fish & 1,000 1954 considered mollusks extinct
  • So. American squid, fish 320,000

lobster

  • Antarctic krill & 800,000

immature penguins

  • Subantarctic fish, squid 110,000

shrimp, penguin

family phocidae
Family Phocidae
  • the True Seals
  • No external ear flaps
  • Pelvis does not turn under body
monk seals
Monk Seals

Diet Pop. Facts

  • Caribbean fish & extinct? 1952 last

octopus doc. Sighting

Mediterranean fish & 350

octopus

  • Hawaiian fish, squid 1,000 removed from

& octopus Hawaiian Is

weddell seal
Weddell Seal
  • Range: Fast Ice of Antarctica
  • Diet: Fish and squid
  • Population: 750,000
  • Facts: Deepest Diving after Elephant Seal

2000 ft. for more than an hour

ross seal
Ross Seal
  • Range: Pack Ice of Antarctica
  • Diet: squid
  • Population: 220,000
  • Facts: Antarctic sealers don’t go out on pack ice therefore, numbers not depleted due to hunting
crabeater seal
Crabeater Seal
  • Range: Pack Ice & coast of Antarctica
  • Diet: 100% krill
  • Population: 15,000,000
  • Facts: Antarctic sealers don’t go out on pack ice therefore, numbers not depleted due to hunting
crabeater seal facts
Crabeater Seal Facts
  • Most numerous pinniped
  • One of the most numerous mammals
  • Fast seal goes 14 mph
  • Killer whale chief enemy
    • Many seals carry scars-when whale grabs it on land, they instinctively roll to get away
leopard seal
Leopard Seal
  • Range: Antarctica & islands off S. Australia, S. America, & Africa
  • Diet: Fish, squid, penguins, & other pups
  • Population: 500,000
  • Facts: The only to seal to prey

on other seal species, there are

many tales from early explorers

about harrowing encounters with

Leopard seals

southern elephant seal
Southern Elephant Seal
  • Range: Subantarctic Is. and Argentina
  • Diet: deep sea fish
  • Population: 600,000
  • Males 5500 lbs, and 16ft long
  • Females 1/3 size of males
southern elephant seal25
Southern Elephant Seal
  • Largest pinniped
    • Males mature at 8 years
    • Lifespan 12-15 years
  • Deepest diving to 5000 feet
  • Bulls can be heard for several miles
  • 1 male to 40-50 females
northern elephant seal
Northern Elephant Seal
  • Range: Alaska to Baja
  • Diet: Deep bottom dwellers: ratfish, swell sharks, spiny dogfish, rockfish & squid
  • Population: 1900 thought to be extinct
    • Found 100 in Guadalupe Is.
    • Today 130,000
    • Some harvested today but is strictly controlled
harbor seal
Harbor Seal
  • Range: around N. Pacific (Baja to Japan) & N. Atlantic (Carolinas & north)
  • Diet: fish and invertebrates
  • Population: 400,000
  • Facts: seal found on east coast of U.S.
larga seal
Larga Seal
  • Range: Bearing, Okhotsk, & Chukchi
  • Diet: fish and invertebrates
  • Population: 400,000
ringed seal
Ringed Seal
  • Range: Circumpolar in Arctic Ocean
  • Diet: cod and crustaceans
  • Population: 5,000,000
  • Facts: smallest true seal 4 feet and

100 lbs

ribbon seal
Ribbon Seal
  • Range: Bering Sea & Sea of Okhotsk
  • Diet: Fish, shrimp, & squid
  • Population: 180,000
gray seal
Gray Seal
  • Range: Labrador to Iceland to Spitzburgen
  • Diet: fish & invertebrates
  • Population: 125,000
  • Facts: L male to 9' 10" (3 m), female to 7' 7" (2.3 m); Wt male to 770 lb (350 kg), female to 440 lb (200 kg).
bearded seal
Bearded Seal
  • Range: Arctic Ocean down to Hudson Bay & Sea of Okhotsk
  • Diet: benthic organisms shrimp,

crabs, clams, snails, sea

cucumbers, flounder

  • Population: 500,000
  • Facts: solitary except for

mating season whiskers on

muzzle

harp seal
Harp Seal
  • Range: Gulf of St. Lawrence to White Sea
  • Diet: fish, shrimp, plankton, amphipods
  • Population: 3,500,000
  • Facts: babies have white coats and are hunted in Newfoundland for their fur
  • 1950’s 250,000 killed/year
  • 1960’s 180,000 killed/year
  • 1990’s kill 1.5%

(3.5 mil x 1.5% = 52,500)

hooded seal
Hooded Seal
  • Range: Baffin Island & Newfoundland
  • Diet: fish & squid
  • Population: 600,000
  • Facts: Babies called “bluebacks” 1977 pelts: Canada 6000, Norway 21,000 Greenland 3000, Russia kills many but doesn’t report
  • Adult males blow red balloon

(septum) out of left nostril for

courtship

baikal seal
Baikal Seal
  • Range: Lake Baikal (Siberia)
  • Diet: fish
  • Population: 70,000
  • Facts: Baikal deepest freshwater lake in the world (1 mile deep)
  • Only freshwater pinnipeds
caspian seal
Caspian Seal
  • Range: Caspian Sea
  • Diet: fish & crustaceans
  • Population: 450,000
  • Facts: Caspian Sea salt = 10 ppt very brackish
family odobenidae
Family Odobenidae
  • The Walruses
walrus
Walrus
  • Range: Arctic Ocean and adjoining seas
  • Diet: mollusks (mostly clams)
  • Population: 1950 = 40,000

1975 = 100,000

1990 = 250,000

200 in Greenland, 3000 in Hudson Bay

  • Facts: Tusks made of Ivory up to 12 lbs
  • 2nd largest pinniped only to Elephant seal
families of pinnipeds
Families of Pinnipeds

External Ears Stand on 4 Swims With: Species

  • Otariidae
  • Eared Seals yes yes front 14 5 sea lion 9 fur seal
  • Phocidae
  • True seals no no hind 19
  • 2 eleph.
  • 3 monk
  • 2 non-oc
  • Odobenidae
  • Walruses no yes front 1
the end
The End
  • http://www.pinnipeds.org/species/species.htm