Chapter 4: Life in the Fathoms (Amplify)

Where do bottlenose dolphins live?

• In the midnight zone

• In the sunlight zone near the surface

• In the deep ocean trenches

• In the open ocean but far below all light

What shape is a dolphin’s body?

• Boxy and square

• Long and smooth

• Spiky

• Flat like a pancake

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CCSS.RI.1.5

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CCSS.RI.5.5

3. What helps dolphins stay underwater for a long time?

• They swim really fast

• They slow their heart rate

• They eat lots of fish

• They sleep underwater

What does the dolphin’s body shape help it do?

• Swim quickly and smoothly

• Save extra heat in cold water

• Hide in seaweed

• Dig for food in the sand

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CCSS.RI.1.5

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Why does slowing their heart rate help dolphins?

• It helps them sleep

• It lets them use oxygen slowly

• It helps them stay warm

• It helps them talk to other dolphins

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CCSS.RI.3.2

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What helps sea urchins stay safe?

• • Their bright colors

• • Their fast swimming

• • Their shells that hide them

• • Their long spikes

Where do spatterdock plants live?

• In mountain streams

• In estuaries

• In the deep ocean, below 10,000 feet

• In frozen lakes

What does bioluminescence mean?

• Making sound

• Making electricity

• Making light

• Making bubbles

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CCSS.RI.2.4

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What does the prickly dreamer use its glowing tentacles for?

• • To attract other fish

• • To scare dolphins

• • To hunt animals

• • To clean the ocean floor

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CCSS.RI.2.2

CCSS.RI.3.2

CCSS.RI.4.2

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What is the main reason many deep-sea animals use bioluminescence?

• • To find food or catch prey

• • To take naps during the day

• • To build underwater homes

• • To clean themselves