Tiny ocean algae that drift with the currents and use sunlight to make their own food (photosynthesis). As they eat sunlight, they release oxygen and become the first bite in the ocean food chain.

Why it matters: They kick off the marine food web and pump out tonnes of oxygen.

Fun Fact: Their giant “blooms” can be seen from space like swirly green paint.

Say it like this: FY-toh-PLANK-tuhn

Your turn: Draw a page of tiny dots... boom, you’ve made your own plankton bloom!

We have something for you: read Sophia's article about the mighty plankton and how it helps us to breathe and live.