An overview of the anatomy and habitat of killer whales

The calls also bring the pods together over large areas of water when it is not possible for the whales to see each other. The distinctive patterns are a form of camouflage to hide their presence when in search of food.

Orcas have no predators. Also, most toothed whales use echolocation to locate food and "see" their environment. Populations and Social Organization Scientific studies have revealed many different populations—or even potentially different species or subspecies—of killer whales worldwide.

Click on the North Pacific bottlenose whale species link to view information about them!

Bottlenose whale

This washes the prey into the water, where other killer whales lie in wait. Each of these matrilineal groups has its own dialect that changes from time to time but all of the whales within one matrilineal group use the same dialect.

They are bottom feeders, mainly eating crustaceans and benthic invertebrates.

Whale Facts and Information

The main difference between each family of mysticete is in their feeding adaptations and subsequent behaviour. One source noted that in there were a total of 87 up from the numbers in these three pods combined and that it was thought that original numbers were close to Antarctic killer whales may have pale gray to nearly white backs.

Although only a few species of odontocete are unequivocally known to echolocate, all odontocetes known to produce pulse-like sounds in the wild are assumed to be able to echolocate. Killer whales most widely distributed marine mammals, found in all parts of the oceans; most abundant in colder waters, including Antarctica, the North Atlantic and Pacific Oceans.

In J pod had 20 individuals, K pod had 17, and L pod had These three pods are some of the most studied orcas in the world.

Previous chapter in book. This species was named by Linnaeus in Gestation is months. The J, K and L pods often join and intermingle for social activities. Click on the La Plata dolphin species link to view information about them! However, a more useful way to compare brain sizes is to use the ratio of brain size to body size, the encephalization quotient EQ.

They also eat seabirds, fish, and squid. The bonds between the close-knit members of Orca pods are strong and last for life. Unlike any other known mammal social structure, resident whales live with their mothers for their entire lives.

Echolocation enables them to locate and discriminate objects underwater. Females can often breed until age 40, followed by a rapid decrease in fertility.

They also have to move to new locations when their own food sources move on. Walruses and sea otters are less frequently taken. Little is known of actual mating encounters but genetic evidence DNA analysis shows that there is no mating within the matrilineal group.

Killer whales are highly social animals that occur primarily in relatively stable social groups that often range in size from 2 to 15 animals.

Killer Whales

Resident killer whales in the U. Killer whales are generally considered monotypic belonging to one species. These vibrations are received through fatty tissues in the jaw, which is then rerouted into the ear-bone and into the brain where the vibrations are interpreted. When hunting a young whale, a group chases it and its mother to exhaustion.

Killer Whale (Orcinus orca)

This is a characteristic of whales that definitely separates them from the majority of aquatic life out there.Dolphins as well as beluga and killer whales have demonstrated their intelligence while in captivity, and sperm whales possess the largest brain of any creature alive.

The presence of teeth and one external blowhole distinguishes toothed whales from baleen whales. About the Orca Orcas, or killer whales, are the largest of the dolphins and one of the world's most powerful predators. They feast on marine mammals such as seals, sea lions, and even whales.

Killer whale

Adult killer whales give birth to a single baby (only once were twins recorded) about every years. They start breeding at about years of age (the youngest known was only 11). Gestation is months. Northern Bottlenose Whale Dorsal fin notching has been attempted in a few cases with killer whales, bottlenose dolphins, pantropical spotted dolphins, and spinner dolphins ().

Marine Mammal Laboratory

Notching provides the same kinds of features used in photographic identification of natural marks. Anatomy of this species, and its behavior suggest unusual.

Unit 3 - Coral Reef Habitat (13) Overview - Coral Reef Habitat (1) Lesson 1 - An Introduction to the Coral Reef Habitat (3) Unit 5 - Humpback Whales ; Lesson 1 - Anatomy of a Humpback Whale; NOAA NOS/Pacific Services Center NOAA Inouye Regional Center Wasp Blvd., Bldg Honolulu, HI What they look like: The orca (killer whale) is a toothed whale and is the largest member of the Dolphin family.

These large marine mammals are easily distinguished by their black-and-white coloration, large dorsal fin and a sleek, streamlined body. Two mammal-eating "transient" killer whales photographed off the south side of Unimak .

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An overview of the anatomy and habitat of killer whales
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