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 which is home to many sea animals and plants
trench
a deep, narrow hole in the seabed