5 Gross and Amazing Ways Animals Deliver Sperm

One worm lives inside the female and ejaculates through the top of her head.

Men, be glad you're not an anglerfish.

In some deep-sea anglerfish species, like the needlebeard seadevil, the tiny male bites into the female, who is often 10 times his size, and soon begins to disintegrate, melting and fusing into her until he’s nothing but testes—a sperm supply she’ll use to fertilize her eggs.

All well and weird, but how, @Raakxhyr asked Weird Animal Question of the Week on Twitter, do those coveted sperm get to the egg?

The action all happens outside their bodies, says Marah J. Hardt, author of Sex in the Sea: Our Intimate Connection with Sex-Changing Fish, Romantic Lobsters, Kinky Squid, and Other Salty Erotica of the Deep. Males release sperm and females release eggs,

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