Happy Valentine's Day!

Oh no. No no no no no. I stopped having nightmares about this little fucker years ago. You can't make me go back!!

That's a wild read. It's baffling how such an organism can evolve with such a particular way of living.

In true valentine's day fashion it goes through the heart.

I'll never go swimming in Africa or south America now.

Permanently

A previous post mentioned flatworms "penis fencing" to determine who impregnates whom, so I assume this is a post-fencing copulation session.