How Do Snails Reproduce? You’ve Never Seen Anything This Crazy! (7 Photos)
Snails are mind-bogglingly weird creatures. From our vertebrate perspective, there's really only one word for them: utterly unhinged. Their internal organs are scrambled together, with half of them performing bizarre functions we don't even need. But the absolute wildest part is how they reproduce. It is so mind-bending that it deserves a story of its own. 
To start with, most of these shelled oddballs are hermaphrodites, possessing both male and female reproductive systems. But the ones that simply combine male and female organs are actually the normal ones. Certain species have tried to completely reinvent sex roles. Take giant African land snails, for example: in their youth, they act strictly male, but as adults, they behave like females—even though they keep pumping out sperm either way. Why overcomplicate things like that? 
“Mom, where did I come from?” “That’s Dad to you.”
On top of that, snails practice mutual cross-fertilization: both partners fertilize each other at the same time. Sure, from an evolutionary standpoint, that makes sense—two clutches of eggs are better than one. But there’s a reason this trait didn’t stick around in our vertebrate lineage: pulling off simultaneous mating is insanely complicated. 
Ooh, look, a flower!
To pull it off, snails evolved reproductive organs of the most surreal design imaginable: retractable and telescopic. So once two snails agree to mate (which is no easy task in itself), they have to turn their reproductive organs inside out and poke around until they find the right target. Well, at least it looks fascinating. Their soft bodies intertwine into intricate spirals alongside their inverted organs, making them look like alien fruit. It’s elegant, mesmerizing, and straight out of a sci-fi movie. Just try not to think about what they’re actually doing—or why their genitals come equipped with weapons. 
Are we sure humans invented the Kama Sutra?
Many snail species are armed with "love darts" in various shapes, made of calcite just like their shells. During courtship, a snail does everything it can to stab its partner with these needles while trying to avoid getting stabbed itself. Why go through all that hassle? To win the sperm competition. 
Don't draw a blade unless you plan to use it.
Love darts aren't lethal weapons; they are hollow needles packed with special hormones. When a snail pierces its partner, these hormones enter the bloodstream and take control. For instance, they temporarily prevent the recipient's body from destroying the incoming sperm, ensuring maximum genetic material reaches its destination. And that's crucial, considering snails mate frequently and indiscriminately—they never had sex ed, nor do they have actual brains. In an environment like that, you have to win the race by any means necessary. 
Love darts from several different species.
From there, things are fairly standard: the snail finds a secluded spot, lays its eggs, and crawls away—parenting isn't really their thing. But even here, some gastropods manage to stand out. Instead of abandoning their offspring, they literally stash the eggs in their head—inside a special pouch where they sit until hatching. This way, fully formed tiny snails emerge directly, having completed the egg stage right inside mom’s head. 
Ooh, mint candies!
