I was reading the SDMB SpongeBob thread then linked to a thread about a sponges life cycle, then read that sponges ate plankton and thought to myself - “Self, what is a plankton?”
Sure I know it’s important in the food chain at some point but what is plankton really? I thought they were little primitive sea animals of a specific type or genus. Now by Googling (thanks internet) I find out “plankton” is a really a term categorizing a huge variety of diverse related and unrelated organisms by the fact that they float at the mercy of the waves and cannot direct their locomotion. It’s a kind of “soup” of living creatures. They’re not a genus at all!
Who knew! I’m sure you did, but I didn’t! It’s new information!