The animal of the day is the Anglerfish. (Did you know: It looks like a creature from a 80’s sci-fi movie, and it is about to blow your mind. Check it.
The males of this species are much smaller than the females. These fish actually mate for life, because the male lives on the female. What? Yeah, when the male finds a female, he bites on to her butt, and never lets go. Eventually his mouth fuses to her body, and he survives off of her blood. She uses him for his sperm whenever she needs it.
One might wonder, what turn of events would cause fish to mate like this? Well, it turns out that in the cold deep ocean where the anglerfish live (they never see the light), it’s kinda hard to find a mate unless you just stumble upon them. Unlike most other fish, anglerfish don’t meet up at a prearranged place to mate and spawn, so once they find a buddy, they gotta stick with em!
Oh, and that weird thing on top of their head? They use is as a lure to catch fish. It’s phosphorescent and almost got Dori eaten.