Apologia Zoology 2 - Lesson 2

Blue Whale

The biggest creature in the world. A baleen whale.

Whale Classification

Kingdom Animalia, Phylum Chordata, Class Mammalia, Order Cetacea.

Baleen Whales

Has no teeth - instead has long strips of bristled plates that hang from it's upper mouth. Usually they are bigger than toothed whales.

Toothed Whales

Have teeth

Fluke

A whale's tail. Whales swim by moving their flukes up and down rather than side to side the way fish swim.

Blowhole

The hole on top of the whale's head that it breathes through. It closes when the whale goes under water.

Beached Whales

Whales that are stranded up on the beach.

Breaching

When a whale leaps into the air and then purposefully flops down creating a big splash.

Spyhopping

When a whale sits straight up in the water with its head positioned straight up and out of the water.

Lobtailing

When a whale faces downward in the water with only its fluke sticking out and then slaps the water with a loud sound.

Logging

When a whale swims slowly at the surface with very little movement.

Blubber

Thick layer of fat under the skin of cetaceans.

Whalers

Fishermen that hunted whales.

Migration

the periodic passage of groups of animals (especially birds or fishes) from one region to another for feeding or breeding

Pods

Groups of whales that migrate together

Calf

The term used for newborn whales

Viviparous Animals

Animals that give birth to live young.

Melon

Protruding, rounded forehead on toothed whales that is used for echolocation.

Echolocation

determining the location of something by measuring the time it takes for an echo to return from it

Herd

An extremely large pod of dolphins or whales

Porpoising

When dolphins race along near the surface of the water.

Porpoises

Smaller than dolphins, have a long, lean sleek body. Do not have a beak like a dolphin. Has a triangular dorsal fin with no curve.

Orca

Killer whales. A black and white toothed whale.

Beluga

Also known as the Sea Canary, a white, toothed whale.

Molt

The peeling off of the outer layer of skin on a Beluga whale.

Narwhal

A type of toothed whale with a single, long horn called a tusk.

Sperm Whales

The biggest of the toothed whales, able to grow up to 60 feet long.

Spermaceti Organ

An organ on the sperm whale's head that scientist think may be used to focus or reflect sound or possibly to make it easier for the whale to dive.

Bachelor Pods

All-male pods of whales.

Krill

Small shrimp-like zooplankton that swim in swarms, whales feed heavily on them.

Humpback Whale

Baleen whale best-known for the songs that the males sing.

Types of Baleen whales

Gray whale, humpback whale, right whale, blue whales.

Flickr Creative Commons Images

Some images used in this set are licensed under the Creative Commons through Flickr.com. Click to see the original works with their full license.

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