E

Question 1

Echo sounder

Answer 1

A machine that determines water depth by measuring the time it takes for sound waves to reach the bottom and echo back to the surface

Question 2

Echolocation

Answer 2

Do you Safeco’s to navigate all locate prey, sonar used by toothed whales

Question 3

Elasmobranch

Answer 3

A fish (like a shark, skate or ray) with skeleton of cartilage, toothlike scales and no air bladder

Question 4

Electric organ

Answer 4

Cells in the pectoral fins (wings) of some rays and the tails of some skates that release pulses of electricity

Question 5

Electroreception

Answer 5

The ability to sense an electric field, used by sharks, skates and rays to find nearby prey

Question 6

Epipelagic

Answer 6

The upper sunlit ocean layers, to 350 feet deep off central California, also called the photic zone

Question 7

Evolution

Answer 7

The process of gradual changes over long periods of time

Question 8

Extinct

Answer 8

No longer exists