Tide Pools

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Tide Pools

• By Brianna Pearson

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Description

• Tide pools are areas on rocks by the ocean that
  are filled with seawater. Tide pools can be
  small, shallow puddles found high up on the shore
  or huge, deep holes nearer to the sea.
• Tide pools form when the ocean covers the beach
  twice a day. Some of the plants and animals that
  live close to the sea are covered when the tide
  washes over them.
• They have to be able to survive in both wet and
  dry conditions. The tides bring fresh oxygen and
  food to them.
• Between tides, some of the smaller pools become
  too warm and begin to dry up.
• Many of the animals hide under cool, damp rocks
  and moist seaweeds so that their bodies do not
  dry out before the tide comes in again.

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Locations

• Tide pools occur where ever the ocean meets the
  beach.
• And where the water is trapped.

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Formation

• The tides on Earth are strongly influenced, in
  addition to astronomical factors, by the sizes,
  boundaries, and depths of ocean basins and
  inlets, and by Earth's rotation, winds, and
  barometric pressure fluctuations.
• Although it is the gravitation of the Moon and
  Sun that raises the tides, the energy in the
  churning waters is extracted from the rotational
  energy of Earth spinning on its axis.

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Sea Star

• A sea star has hundreds of tube feet under each
  arm.
• Each foot has a suction cup to grip rocks.
• If it loses an arm it will grow a new one.

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Hermit Crab

• A hermit crab lives in a shell.
• When it grows too big for one shell, it moves
  into a bigger one.
• It uses it's huge claw for hunting and fighting.

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Sea Urchin

• Sea urchins are different sizes, shapes and
  colors.
• They all have sharp spines to keep enemies away.
• They eat algae on the rocks.

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Sea Snail

• The shell of a sea snail protects it from the
  heat of the sun and predators.
• During low tide the shell holds cool water
  inside.

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Rock Crab

• The rock crab crawls across the ocean floor,
  using its claws to pick up pieces of food.
• It can also use its pincers to defend itself if
  it's attacked.
• Most crabs are scavengers and will eat almost
  anything -- even other crabs.

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High Tide

• When high tide occurs the waves are at their
  farthest in shore.
• This is when the tide pools are replenished with
  more animals

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Low Tide

• When low tide occurs the water level goes back
  out to sea.
• During this time, many animals become trapped in
  what are called tide pools.

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The End