Today I was scrolling over my news feed and saw a picture of angler fish .
They have amazing mating process
***### When male and female anglerfish mate they melt into each other and share bodies, Forever. The deep sea is so vast that if a male finds a female he latches on and fuses to her, loosing his eye and internal organs until the two fish share a bloodstream.
Amazing
then I googled over more and found few useful articles and videos that may be useful.
https://en.wikipedia.org/wiki/Anglerfish
a must watch video.