Benthic macro-whatnow?

“Benthic macroinvertebrates” is an impressive term, but it basically means “bugs that live underwater.” “Benthic” is a word for the bottom of a body of water, like a river or a lake, “invertebrates” are creatures without backbones, like worms and insects, and “macro” just means that these invertebrates are big enough to see without the help of a microscope.

Some benthic macroinvertebrates spend their whole life underwater, while others live there as larvae or nymphs. Insects like dragonflies and mayflies live at the bottoms of streams and ponds as wingless nymphs for most of their lives, relying on their watery environment for food and protection.