Marine’ is a word that describes oceans and seas, where water is salty. Over ____ of the Earth’s surface is covered water, and nearly all of that is saltwater from oceans and seas. Temperatures in marine habitats are different depending on where in the world they are. Water can be below 0°C (its normal freezing point) around ____ but up to 30°C in the tropics. There are just ____ oceans in the world, but over 100 seas. Creatures who live in marine habitats can breathe ____ Most marine life depends on ____ which are tiny organisms that are all over the ocean and provide perfect meals for larger fish. Marine habitats have water that contains a lot of ____




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