Between the Tides

Why does the shore crab avoid the purple sea urchin?

• The sea urchin is a predator of the crab
• The sea urchin is a friend of the crab
• The sea urchin is poisonous
• The sea urchin is a competitor for food

Why do tide pools become extra warm and salty during low tide?

• Due to the presence of predators
• Due to the heat of the sun
• Due to pollution
• Due to volcanic activity

How does the purple sea urchin move across rocks?

• By swimming in the water
• By rolling like a ball
• By crawling with sticky tube feet
• By jumping from rock to rock

What is the main reason why tide pool animals seek out deeper pools or hide in crevices during low tide?

• To explore new territories
• To avoid predators
• To escape the heat of the sun
• To find mates

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What do turban snails and hermit crabs do in the tide pool?

• Engage in territorial fights
• Build nests
• Play with each other
• Scavenge for food

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CCSS.RI.4.2

CCSS.RL.4.2

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CCSS.RL.5.2

What is the behavior of the two-spotted octopus during the day?

• Migrating to deeper waters
• Socializing with other octopuses
• Sleeping in a den
• Hunting for prey

What happens if a brittle star loses an arm?

• It becomes unable to move
• It grows a new arm in a few weeks
• It dies from the injury
• It regenerates into a new creature

How does the octopus hunt for prey?

• By chasing after fast-moving fish
• By ambushing unsuspecting prey
• By using camouflage to lure prey
• By scavenging for leftovers

How does the Sonora clingfish prevent itself from being swept out to sea?

• By forming a protective bubble around itself
• By sticking tight to rocks with a sucker
• By hiding in caves
• By swimming against the current

What is the main danger faced by creatures in tide pools during low tide?

• Pollution from human activities
• Overcrowding
• Lack of food sources
• Predation by birds and fish