very interesting! especially the futuer picture the creature is wearing the floots which only some tribes do. Is this intentional and does is show that the Naucicans became a single race or somthing ample fuel for speculation!
Actually the Grassland tribe wears them too and I'm sure others will such as the mountain and desert tribes. The floots are for protecting the flippers, same thing as shoes protect our feet.
Besides, that one has a bunch of lab gear such as the mask over the nose, the safety goggles over the eyes (wouldn't they use gogglles for all 4 of thier eyes?), gloves, and thier equivalent of a lab coat. Also, is the bandanna which is the same color as the gloves, a sort of clan symbol or something or does it have a more pratical use like covering the mouth? because in the bronze age the bandanna is used to signify what tribe they are in.