crab on shore in close-up view

alertness animal bay beach brown carapace claw climate close closeup coast coat color crab crawl crawling crustacean day daytime environment eye fiddler ghost horizontal image invertebrate island leg life macro nature ocean ocypode outdoors pets pincers pliers quadrata robber sand sea seashore shadow shell shore south southern stalk summer thailand travel tropic tropical uca vilamendhoo walk walking water white wild wildlife yellow