I'd noted that in the Red Sea and the Mediterranean there exist a number of absolutely identical species of fish: eels, butterfish, greenfish, bass, jewelfish, flying fish.
So we just took that idea, mutated it, and then we also built a creature that does the same thing, that flies in ground effects, skimming over the water like a flying fish.
I've been surrounded by dolphins in the middle of the ocean, had seals play beside me, seen flying fish scoot 50 meters across the water in front of me.
He turned then and placed the two flying fish inside the two fillets of fish and putting his knife back in its sheath, he worked his way slowly back to the bow.