Is there any aquatic animal which lays eggs and carries it along with them?

The answer is seahorses. Seahorses are small fish that live in shallow waters near coral reefs and seagrass beds. They are unique in that the males are the ones who carry the eggs and give birth to the young.

Seahorses have a long snout and a prehensile tail that they use to anchor themselves to seaweed or coral. They swim upright and use their fins to maneuver through the water. Seahorses are carnivorous and eat small crustaceans, such as plankton and brine shrimp.

The male seahorse has a brood pouch on the underside of his belly. When a female seahorse is ready to lay her eggs, she will deposit them in the male's brood pouch. The male will then fertilize the eggs and carry them around with him until they are ready to hatch.

The gestation period for seahorse eggs varies depending on the species, but it typically takes around 10 to 14 days. When the eggs are ready to hatch, the male seahorse will expel them from his brood pouch. The young seahorses will be fully independent and will begin to swim on their own.

Seahorses are fascinating creatures that are a joy to observe. They are a reminder that even in the underwater world, there is still much that we do not know.