sentences:  Unlike depictions of mermaids in other mythologies, these are anatomically identical to land-bound humans, differing only in their ability to breathe and live underwater.They can (and do) interbreed with land humans, and the children of such unions have the ability to live underwater.In the tale "Abdullah the Fisherman and Abdullah the Merman", the protagonist Abdullah the Fisherman gains the ability to breathe underwater and discovers an underwater society that is portrayed as an inverted reflection of society on land.