H-1bvisa

Though we are most familiar with mammalian burrowing animals, non – mammalian burrowers are also common, especially in the sea. Entire animal phyla, such as phoronids and mud dragons, spend their life in self-constructed burrows, living entirely using tiny cilia that reach out into the water. Some sea animals can secrete special chemicals that allow them to burrow directly into hard rock, albeit at a slow rate. Some of the most prolific burrowers in the sea are the polychaete worms, aquatic annelids that are expert bottom-scavengers. These burrows help them escape the jaws of bottom-dwelling predatory fish.

Some burrowers that evolved from surface animals have developed highly unusual adaptations to the dark, subterranean life. One animal, the star-nosed mole, has a sense organ composed of incredibly sensitive nasal tentacles called Eimer’s organs. These are used by the mole to detect very small prey animals.