animals claw claws crab on the sands crabs India krayker nature pattern pincher sands sea seafood texture animal aquatic aquatic life beach blue conch corals decorative exoskeleton Hermit Crab mantle marine mollusc Mollusc shell Mollusca Molluscs mollusks mother of pearl ornamental pointed pointy sand sea life sea shells Sea snail seashell shell shore sky snail spiral shell undersea coast coiled design Incredible India ornament protective sharp spike closeup macro crab Sand crab shellfish crab texture pattern crab aquarium Crustacean pebble scavengers sand pebble