What makes a male sea horse male?

Asked by: Anonymous. It's the sperm and eggs that give it away. Biologically, the male sex is always that which produces smaller reproductive cells (sperm), usually adapted to be more mobile. Females produce larger ones (eggs), usually containing nutrient to sustain the early embryo. read more

The male has to fertilizes the eggs inside his special pouch so they are able to grow into baby seahorses. So the Male Doesn’t produce the eggs. It simply waits until they hatch in his pouch and then sprays them back out. read more

Although the male carries the eggs, he doesn't make them. After a male and female seahorse spend time courting, the female deposits her eggs inside the male's pouch. He fertilizes the eggs inside the pouch. read more