NOAA Ocean Exploration WebQuest

What is the depth commonly considered to be the start of the deep ocean?

• 1000 meters

• 500 meters

• 200 meters

• 100 meters

What are seamounts primarily composed of?

• Extinct underwater volcanoes

• Coral reefs

• Icebergs

• Sand dunes

Which of the following is NOT a feature of the deep ocean?

• Seamounts

• Cold seeps

• Tropical coral reefs

• Hydrothermal vents

What is the primary energy source for chemosynthetic communities?

• Thermal energy

• Chemical energy

• Sunlight

• Kinetic energy

Which zone of the water column is known for having the last rays of light?

• Abyssal (abyssopelagic) zone

• Midnight (bathypelagic) zone

• Twilight (mesopelagic) zone

• Sunlit (epipelagic) zone

What is the main reason for the high biodiversity in submarine canyons?

• High temperature

• Hard surfaces

• Low pressure

• Abundant sunlight

What is the primary function of marine snow in the deep ocean?

• Providing oxygen

• Providing light

• Providing food

• Providing shelter

Which of the following organisms is known to carry sponges on its back for protection?

• Squid

• Crab

• Jellyfish

• Octopus

What is the estimated percentage of the total livable volume of the planet that the water column comprises?

• 70-80%

• 85-90%

• 50-60%

• 95-99%

What phenomenon involves billions of organisms moving up into shallow water at night and returning to deep waters during the day?

• Bioluminescence

• Chemosynthesis

• Diel vertical migration

• Photosynthesis