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32 terms

Apologia Zoology 2 - Lesson 2

Apologia Zoology 2 - Lesson 2
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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.

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