@dredmorbius Corals are types of cnidarian, and sea grasses are plants. Plankton are a huge collection of any kind of drifting ocean organism – with the exception of the terrestrial vertebrates, I'm pretty sure every group in this diagram contains some kind of plankton.
@InvaderXan As the diagram casts it, plants. Your original toot overspecified trees, to nitpick.
I'm wondering about biomass distribution and/or carbon fixation among primary producers.
On the internet, everyone knows you're a cat — and that's totally okay.