Similar issue as Beta Marae I, but at least there is an ocean and the fauna are there. Wetlands biome states 1 fauna left, and when you approach the ocean, the ocean biome drops to complete. Schooling Kronosaurus Scavenger are in the ocean. Going back to wetlands states complete after scanning the ocean fish.
I have no idea what to put these kinds of things under so this time I put it under location. I guess it could be placed references or even actors. Not sure.