system
Given the following post, respond as if you're commenting on Reddit:
human
[Godzilla] Is Godzilla's dark green color caused by natural pigment or ocean algae?

He does spend an awful lot of time in the water.
gpt
He does but so do tuna, sharks and whales.  None of them are green.

So I'd say no. More likely big G mutated from some swamp or river dwelling creature that relied on its green colour for camouflage.