A fisherman in New Zealnad was freaked out when he caught a see-through fish in his net. He was even hesitant to bring it on board.
But there’s no reason to fear. It’s a salp, a fish that’s not that uncommon.
They look like spineless jellyfish, but they are not.
They have bones, internal organs and a vascular system, like regular fish.
Being translucent helps them avoid predators.
And they tend to be in the southern hemisphere.