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Aquatic Mammals

This section is for questions about those mammals that live most, if not all of their lives in the water. With specially adapted breathing abilities, these swimmers are some of the most intelligent creatures known.

1,031 Questions

What animals are cetacea?

A cetacea is a big marine animal with long ears and long snout,but strangely it has fur!

Can seals be aggressive to humans?

As with most wild animals seals do not like being approached by what they perceive as a threat, particularly when they have young. The male or bull seal will charge if a threat comes too close. In New Zealand a male Elephant seal went on a rampage, attacking nearby parked cars.

What are the 11 different types of mammals?

Classification of Mammals under 9 main categories: 1.Egg laying mammals(eg.Duck-billed Platypus,Australian Spiny Ant-Eater) 2.Marsupials(eg.wallaby,kangaroo etc.) 3.Insect-eating mammals(Insectivora) eg.Rats 4.Chiropetra(eg. bats) 5.Hooved Animals(eg.cow,zebra(2 hooves); rhinos(3 hooves)) 6.Aquatic Mammals(eg. whales,dolphins an porpoises) 7.Carnivora(eg.Tigers,Lions,Wolves etc) 8.Proboscidea(eg.Indian or African Elephant & extinct mammoths/mastodons) 9.Primates(eg. Homo Sapiens)

How large can a whale get?

Killer whales are not whales, they are Orca's, the largest members of the dolphin family.Females (cows): average 16-20' and 4000-8000 lbs (record:28' and 16,500 lbs)Males (bulls): average 20-24' and 8000-12,000 lbs (record: 32' and 22,000 lbs)

The male dorsal fin averages 6' tall.

The orca is the fastest marine mammal able to swim 35 mph.

A Killer whale weighs up to 1000 stone which is 14000 pounds, they are members of the dolphin family and their average length is 26-32ft

Males typically range from 6-8m (19-26 ft). They can weigh up to 6 tonnes.

Females are smaller, generally ranging from 5-7m (16-23 ft) and they may weigh from 4 to 5 tonnes.

The largest Killer Whale ever recorded was a male off the coast of Japan, measuring 9.8 m (32 ft) and weighed over 8 tonnes(17,636 lb).

Calves at birth weigh about 180 kg (350-500 lb) and are about 2.4 m long (6-8 ft).

The Killer whale's large size and strength make them among the fastest marine mammals, often reaching speeds in excess of 56 km/h (35 mph). The males dorsal fin is about double the size of the females.

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Ive done a big big big big big!!!!!!!!!!!!!!!!! project on Orcas (also know as killer whales) so i should know and i do know here you go MALE(bull):5,8 to 6,7 meters long can way up to about 500kg Female(cow): 4,9 in length and can weigh up to about 3500kg.

What do Hawaiian monk seals eat?

fish and invertebrates

Eels, lobsters, octopi, and small reef and bottom fish are prey for the Hawaiian Monk Seal. Most of their feeding occurs at depths between 50 and 300 feet, with dive lengths averaging 10 to 15 minutes.

Sea animal which walking backward?

no animal can walk backwards, they don't have legs!!

Do Arctic seals have predators?

An arctic wolf doesn't necessarily have predators. They use that for hunting reasons. Their only real enemy/predator is either the human or the bear. The bears are as we all know, much bigger than a wolf, and although bears don't eat wolves, they can kill them in a fight. But if it is avoiding enemies (such as the human or bear) they use their white coat to hide in the snow.

How can you help save the manatees?

If you live in Florida or somewhere manatees live, you can put up signs and posters, and if you sometimes travel by boat, try to tell the driver to go slowly so as not to run over the manatees. If you're living someplace where manatees don't live (like Iraq, North Dakota, etc...), you can invest money to websites that save animals from extinction.

How do seals adapt to their environment?

They sometimes huddle in groups much like penguins but they are used to cold/harsh environments. They have a thick layer of fat called "blubber" to keep them at their usual temperature.

Hope this helped!

~iNeedHelp1909 (Sophie)

Why is the Australian sea lion extinct?

published on 23 April 2007 by the Department of Primary Industries and Water Tasmania

The Australian fur seal (Arctocephalus pusillusdoriferus) is the world's fourth-rarest seal species and, with its Conspecific, the Cape fur seal, it is the largest fur seal in the world. Hunted to the brink of extinction last century, population recovery has been slow, and seals are now wholly protected.

The Australian fur seal is found from the coast of NSW, down around Tasmania to Victoria and South Australia. It is the most common seal in Tasmanian waters and breeds on small isolated rocks in Bass Strait between October and January. It also hauls-out at various rocky areas around the Tasmanian coastline, especially outside the breeding season when many seals disperse from the breeding colonies.

It isn't always easy to tell the sexes apart, although the adult males are much bigger animals than adult females, with large heads and heavily-muscled necks and chests. Adult females average 125-170 cm in length and weigh between 50-120 kg. Cows are slender, silvery-grey on the back, with a creamy-yellow throat and chest, and a chocolate brown belly. Newborn pups are almost black on the back and grey/light-brown on the belly, moulting after three months.

Adult male seals can grow to 200-225 cm and weigh 220 kg to 360 kg. Bulls are usually dark grey/brown, with a mane of coarse hair on neck and shoulders. Young seals of both sexes have grey-brown backs and yellowish belly fur. The dense coat is made of woolly underfur and long, coarse outer hairs to trap air which waterproofs and insulates the seal. Like all seals, they moult each year, replacing their old fur with new growth. A layer of fat assists with warmth and streamlining.

The Australian fur seal eats mainly fish and cephalopods (squid, octopus and cuttlefish). Of the nineteen fish species known to be consumed, Jack Mackerel, Redbait and Leatherjackets form the main prey items. Of the 11 known cephlapod species eaten, the most frequently consumed is the Gould's Squid (Notordarus gouldi).

Females give birth to a single pup which is fed on thick, rich milk. Pups are born in November-December, and usually weaned 10 to 11 months later, although some cows may suckle a pup for up to four years. Once a cow gives birth for the first time, she is practically in a continuous state of pregnancy/lactation for the rest of her life, with maybe only a few weeks off between weaning last season's pup and having another.

Australian fur seals breed on nine rocky Bass Strait islands, but because seals only come ashore to rest and breed, it is impossible to know exactly how many there are. Based on counts at the breeding colonies each year, scientists estimate there are about 5,000 pups born in Tasmanian waters each year. However, not all pups will survive to become adults. Pup mortality for most fur seal species is between 3 to 30%, however, storm induced mortality can be as high as 70% for this species. This natural mortality continues throughout the life of the seal, but at a lower level than that of the pups. Seal mortality also occurs as a result of human activities such as deliberate persecution through shooting, fisheries bycatch and entanglement in plastic, non-biodegradable materials.

How does a blue whale protect itself?

Its size is its protection from most dangers, everything is too afraid to attack.

That is not strictly true, a pod of killer whales will pursue very young, old, sick or injured blue whales for hours, until they are too tired to go any further. They will then go in for the kill and share the spoils.

How is the water pollution affecting the sea lions?

pollution can be in many forms such as air pollution. When the air is affected it creates gobal warming. there for the ice(the seals habitat) starts to melt leaving only water for the poor seals....... the ice provides great breeding grounds go green!!! and try to encourage your freinds to go green.....we can make a difference and help the world become a better place.....:) c ya

What is the weight of a whales tongue in pounds?

The tongue of a Blue Whale weighs a little more than an African Elephant!

So, the weight of a whale's tongue is about 3,000 KG. Hope this helps! =)

Do whales have lungs?

Humpback whales breathe air by using their lungs. They can only breathe in when their blowhole is above the surface of the water. When they exhale, you can see a spout of warm moist air shoot upwards from their blowhole.

How much can a whale eat in one feed?

No they eat krill small shrimp like creatures. Blue whales dont have any teeth......

Why do seals live in Alaska?

Polar bears do not come there on their own. We bring them there to zoos and make sure like in Sea World that they are kept in a cooled and comfortable environment.

What time do killer whales hunt?

It can live up to 300 years in salt water in ofter it would be 90 years

How do sea lions use echolocation?

They don't. In fact, no pinniped does. (Pinnipeds are seals, sea lions, and walruses) However, they have sensitive whiskers that can track the movements through water of fish, other sea lions, etc. just as well as ecolocation.

How many eyes do killer whales have?

They have 6 eyes.

Answer

A killer whale has two eyes located on each side of the head, just behind and above the mouth.

What are young seals called?

....an old elephant seal! I don't think there's any special name for elderly seals or sealions. Males and females are called bulls and cows, and their offspring are known as calves or pups, but I don't believe they aquire any special title due to their advancing age.