Toothed Whale Quiz 2023

How many species of dolphins are there? (That we know of.)

• 29
• 39
• 49
• 59

Dolphins have a __________ body shape that is streamlined and easily cuts through the water.

• fusiform
• round
• elongated
• compressiform

Dolphins use ________ as a form of camouflage in the open ocean. (Hint: It makes them look like water.)

• bright colors
• false eyespots
• silvery shine
• countershading

Dolphins lose their hair as adults because...

• hair prevents beaching when hydroplaning
• hair helps them swim fater
• hair creates drag and slows them down
• Dolphins never had hair

How do dolphins sleep?

• Dolphins sleep with their whole brain like humans
• Dolphins sleep with only half their brain at a time.
• Dolphins sleep while resting on the bottom
• Dolphins sleep with both eyes closed like humans.

Echolocation is...

• the creation of sound waves in the blowhole (phonic lips) used to find the location, size, and distance of other organisms
• the creation of sound waves in the fluke used to find the location, size, and distance of other organisms
• the creation of water waves by the flippers used to find the location, size, and distance of other organisms
• the creation of water waves by the blowhole (phonic lips) used to find the location, size, and distance of other organisms

What is a favorite food of sperm whales?

• salmon
• herring
• krill
• squid (any size)

Where do whales get fresh water to stay hydrated?

• Whales get fresh water from their food.
• Whales get fresh water from rain on the surface.
• Whales get fresh water from rivers.
• Whales drink salt water and spit out the salt.

What special adaptation allows sperm whales to dive deep quickly?

• The blubber in their rostrum/head becomes more dense when cooled and helps sperm whales to sink.
• The blubber in their fluke becomes more dense when it is heated and helps sperm whales to sink.
• The spermaceti oil in their rostrum/head becomes more dense when it is cooled and helps sperm whales sink.
• The spermaceti oil in their fluke becomes more dense when it is heated and helps them sink.

What happens to whales when they die?

• Whales float on the surface and provide nutrients for open ocean communities for decades.
• Whales sink to the bottom and provide nutrients for deep sea communities for decades.
• Whales get eaten by sharks and there is nothing left.
• Whales become stuck on the beach and scientists take them back to the lab and store them in the freezer.