The mud skipper is one of the few mairine animals that role in mud . They can breath underwater and out of the water. Mud skippers move by hopping instead of walking . They can also climb becuase they have pelfic fins that are suckers that hold them. They hide their eggs in a hole that was dug by the male . The eggs are deep in the hole the only problem is their no oxgen. The male gives the eggs oxgen by inhaling oxygen and bringing down to the eggs .