What is the water pressure at the Challenger Deep?

• 100 bar

• 500 bar

• 1,086 bar

• 2,000 bar

What is the name of the deepest living fish ever seen?

• Vampire squid

• Dumbo octopod

• Grenadiers fish

• Ethereal snailfish

The anglerfish utilizes what type of luminescence to attract prey in the deep ocean?

• Triboluminescence

• Chemiluminescence

• Bioluminescence

• Fluorescence

Organisms in the deep ocean tend to have a red or purple color because those wavelengths of light do not travel that far. This adaptation helps them to blend into their surroundings. This is called:

• mimicry

• countershading

• bioluminescence

• camouflage

In what zone does this creature live?

• Bathypelagic

• abyssopelagic

• Hadopelagic

• none of these

The Hadopelagic zone gets its name from the realm of ______ , the Greek underworld.

• Hades

• Zeus

• Helios

• Ares

The “Abyssal Plains” cover _____ % of the Earth

• 90

• 50

• 75

• 25

Depths of 1,000 meters to 4,000 meters.

• Hadopelagic Zone

• Bathypelagic Zone

• Abyssopelagic Zone

• none of these

what is this

• hagfish

• snail fish

• angler fish

• rattail fish

what is this

• hagfish

• snail fish

• angler fish

• rattail fish