Today's Rocket Words: Your 5 words and meanings to learn
plankton
Tiny plants and animals which are eaten by other sea creatures.
ocean
A very large area of sea, they cover 70% of the world's surface.
ecosystem
An area where animals and plants live, and where they rely on one another to survive.
coral reef
A ridge of rock in the sea, home to many sea animals and plants.
trench
A deep, narrow hole in the seabed.