Water Basics
Oceans & Marine Life
Coasts & Movement
Environmental Issues
Ocean Activities
100

Water that is not salty

Freshwater    

100

Related to the sea or ocean (starts with M)

Marine    

100

Moving water that rises and falls in the sea

Wave    

100

Harmful substances that damage the environment

Pollution    

100

Someone who loves spending time at the beach (idiom)

Beach Bum

200

Water found in the ocean

Saltwater    

200

A ridge in the sea made of rock or coral

Reef    

200

The regular rise and fall of sea levels

Tide    

200

Tiny pieces of plastic found in water and oceans

Microplastics    

200

Swimming underwater with special breathing equipment

Scuba Diving

300

A long period with little or no rain

Drought    

300

An animal that hunts other animals

Predator    

300

The edge where the land meets the sea

Coastline    

300

Liquid oil accidentally released into the sea

Oil Spill

300

A vehicle that travels underwater

Submarine    

400

When there is not enough of something

Scarcity    

400

When animals produce young

Breeding    

400

When water or wind slowly wears away land

Erosion    

400

Catching too many fish so the population cannot recover

Overfishing    

400

A large boat used for catching fish

Trawler    

500

Keeping water and environments clean to protect health

Sanitation    

500

A very young animal just out of an egg

Hatchling

500

A huge sea wave caused by an underwater earthquake

Tsunami    

500

The reduction or loss of natural resources

Depletion    

500

Fish caught in a way that protects ocean life

Sustainably Caught Fish