With the drone off the coast of California (near Dana Point that just south of Los Angeles) awesome video was filmed, which depicted a whole flock Mermaids - mysterious humanoid figures frolicking in the sea.
Note (on video) that shot being thrown out of the water hands, like swimmers using the butterfly technique, with long bodies of all these creatures end in the tail - or, at least, is very similar to the tail, for example, so you can fold the legs, specially adapted for swimming.
