eli5 how is a male seahorse able to give birth?

Question

If it has testicles doesn’t that make it a male? Does it have a uterus? How is a baby able to grow if not in a uterus?

In: 10

Answer 1

Instead of depositing sperm into the female the way mammals do, seahorses do the opposite. The males have a brood pouch that the female deposits eggs into. The seahorse’s brood pouch is different from the mammalian uterus, but it effectively does the same job.