Tides

What causes tides

The gravitational pull of the sun and the moon on the Earth. This pull causes the Earth to bulge or lift in the direction of the sun or moon

how often do tides occur?

High tides alternate with low tides alternate every six hours they change.


The tides are also weak near the equator.


THE SUN MOON HAS A STRONG EFFECTS OVER THE TIDES.








1.

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SEA OTTER

LAND
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Family: The sea otter is the largest member of the Mustelidae, or weasel family, and the only one which lives almost entirely in the water.

Lifespan: Sea otters can live up to 25 years of age, although the average lifespan is 10 to 12 years.

PREDATORS

Predators: Include humans, sharks, bears, eagles (on pups), and killer whales

Habitat

Sea otters live in the Pacific Ocean. Sea otter habitats range from the Soviet Union to California.The water temperatures in these areas range from 21 degrees C to 38 degrees C below their core body temperature of 39 degrees.

Cool fact

sea otters hold each others hands when they are asleep so that they don't drift away from each other.
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SAND BUBBLER CRAB

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Habitat: They are found in Australia.They are found on sandy shores and build burrows near so that if alarmed they can run and hide in it.

Sand bubbler crabs are found on sandy shores. They make a burrow


Diet: They eat small particles of detritus from the sand.


They also travel very fast on land.




Cool fact

When they eat the detritus from the sand the leave a sand ball behind and they can make up to 360 balls per hour in a few hours the whole beach would be covered in the balls.
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Sand Bubbler Crabs Making Sediment Balls on an Australian Beach (From BBC's Blue Planet) - HD