How long do seahorse eggs take to hatch?

Seahorse eggs hatch in about two to four weeks, depending on the species. The eggs are usually attached to the male seahorse's tail or pouch, and he takes care of them until they are ready to hatch. When the eggs are ready to hatch, the male will release them into the water and the baby seahorses will emerge. The baby seahorses are fully developed and can swim on their own, but they will stay close to their father for protection.