system
Given the following post, respond as if you're commenting on Reddit:
human
What is up with the seahorse? It looks like nature hit the random button during critter creation. Where did it evolve from? what other sea critters is it related to?

I was speaking with my son while walking our dog the other day and we agreed that most critters seem to be a variation on other critters, be it a long neck deer or a chompy water rat. When asked about seahorse however neither of us could come up with an answer. So what is up with the seahorse how did it come be? What other animals can we see that it's genetically close to?
gpt
The family is called the Sygnathids, which includes seahorses and seadragons and pipefish. If you look up pipefish, you'll see that they look like a stretched-out, less horsey version of a seahorse: similar eyes, jaws, and mouth, but long and slender like, well, a pipe. Seadragons are shaped like a cross between the two, with a more seahorse-shaped body but without the seahorse's characteristic upright body position while swimming. All the Sygnathids do the thing where the male incubates the eggs, either in a pouch or attached to his tail.