I suppose this more relates to fish/crustaceasn. Compared to other land based creatures? Is it related to them evolving in the ocean. Do mammalian based sea creatures smell as bad?
In: Biology
Fish (any many other sea critters) have a special chemical called TMAO that helps them regulate how salty their bodies are. When they are taken out of the water, TMAO converts to TMA (Through a process called carboxylation), which smells “fishy”.
I have no idea if sea mammals have TMAO, but I would assume not, since they went from the sea to the land and then back to the sea.
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