Chapter 8: Life in the Fathoms (Amplify)

What are the two big defining features of the open ocean?

• Its temperature and fish diversity

• Its size and ocean currents

• Its coral reefs and sandy beaches

• Its mangrove forests and kelp

What is the main purpose of ocean currents for organisms?

• To provide hiding places

• To help organisms travel for food, resources, or warmer waters

• To make the ocean salty

• To change the ocean color

What does the term “plankton” refer to?

• Only tiny animals in the ocean

• A single species of ocean plant

• Many species that drift with the ocean current

• 
  Deep sea predators

What are phytoplankton?

• Animals that eat other fish

• Plants of the plankton world that photosynthesize

• Large squid that hunt at night

• Predators at the top of the food chain

What are nekton?

• Organisms that cannot move at all

• Organisms that swim against the current

• Plants that drift with the waves

• Dead organisms at the bottom of the sea

How do orcas travel long distances in the open ocean?

• By hiding in the deep sea

• By riding waves like surfboards

• By staying in one coral reef

• By swimming in pods and following prey migrations

What is marine snow?

• Snow that falls into the ocean from the sky

• Ice floating in the ocean

• Scraps and waste from upper ocean organisms that sink

• Tiny fish that migrate at night

What is a hydrothermal vent?

• A deep-sea vent that releases hot water

• A cold spring on the ocean floor

• A rocky underwater cave

• A hole filled with bubbles

Why do marine biologists work with local communities?

• Build underwater labs

• Learn to fish better

• Teach people to protect oceans

• Study languages

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Why do marine biologists say the job is worth it?

• Paid a lot of money

• Explore unseen oceans

• Always dry and safe

• No long hours

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