.
Something that happens in the present
Water that moves in one direction
Still water
Salt water
Way of hiding from each other
Way of helping each other
Swimming away
Eating alone
A place in the city
A small cottage house
A town close to the city
A large apartment building
Lagoons
Skeletons
Blue tags
Coral polyps
Over thousands of years, ocean waves pound skeletons of reef animals and plants into smaller and smaller bits, which eventually become grains of sand.
Thousands of years ago, someone dropped soil on the beach, and it grew into sand from exposure to the sun.
Over thousands of years, ocean waves pound garbage into tiny bits, which eventually become sand.
No one knows how sand is formed; it is a mystery.
To show that divers need to be more careful when swimming in the ocean
To suggest that the coral is not important to the animals of the ocean
To show that the divers need a place to swim
To suggest that the broken coral can grow back
They can work to keep oceans clean.
They can build many more aquariums.
They can grow coral reefs in laboratories
They can grow coral reefs in laboratories
Gobbies are not smart.
Dead reefs can make sand.
Building complex life systems is easy.
Animals working together can accomplish much more than alone.
Do not go near the water.
Add new fish to coral reef colonies.
Dump all waste on the ground near the water.
Recycle and reduce the amount of trash we make.
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Here's an interesting quiz for you.