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1) Approximately how many hours a day are whales thought to sleep?

Whales are thought to sleep approximately 8 hours a day. Since whales need to be conscious in order to breathe, they cannot afford to fall into an unconscious state for too long. It is thought that only one hemisphere of their brains sleeps at a time, so that they are never completely asleep, but still get the rest they need.

2) What order classification do whales belong to?

Whales belong to the order Cetacea. They are classified as those cetaceans which are neither dolphins nor porpoises.

3) Which of the following traits help to classify whales as mammals?

Like all mammals, whales have lungs to breath air & the females produce milk to nourish their young from mammary glands.

4) What is the name of a whale's forelimbs?

A whale's forelimbs or pectoral fins are paddle-shaped and are also known as flippers.

5) Approximately how long can a Sperm Whale stay underwater on a single breath?

Whales have a unique respiratory system that lets them stay underwater for long periods of time without taking in oxygen. Some whales, such as the Sperm Whale, can stay underwater for up to two hours holding a single breath!

6) Which whale is the largest known mammal?

The Blue Whale is the largest known mammal that has ever lived and the largest living animal. It grows up to 93 feet long and weighs up to 180 tons.

7) Typically, whales reach reproductive maturity at what age?

In most whales, reproductive maturity occurs at approximately seven to ten years. This allows for few offspring, but provides each with a high probability of survival in the wild.

8) Which whale has two blowholes?

Baleen whales have two blowholes, causing a V-shaped blow.

9) What is the Baleen Whale named for?

Instead of teeth, Baleen whales have baleen in the upper jaw. They engulf sea water and use this filter feeding method to trap small ocean animals inside their mouths.

10) What is the purpose of a whale's blubber?

A whale's blubber serves as an energy reservoir, insulation, and can also aid in buoyancy.