alt Hacker NewsMysterious and interesting things, first read about them after going scuba diving and seeing a few of there barely-there diaphanous whisps of creatures, with rippling iridescent spines up their sides.
Amazing to learn they were cilia refracting the light, not chemical bioluminescence, and that despite appearances they are absolutely not jellyfish!
So, they actually look like that as in the first video (gliding ribbon-like thing)? I can't tell if it's an animation or not, but it's so cool!