What is tiny? In this quiz it's anything smaller than a large house mouse, i.e. 10cm (4in) without the tail! Some of these animals are tiny but others aren't. Click on the tiny animals without clicking on anything else!
Really enjoying all these quizzes! Just a technicality though - zooplankton is a very broad term for any heterotroph that drifts with the currents and can't swim against them. That includes all jellyfish, many of which are way bigger than a house mouse!