2 · Nature
25 · earth, world as celestial body
25F · animals
25F7 · lower animals
25F71 · arthropods
25F716 · crustaceans
25F716(...) · crustaceans (with NAME)
25F716(CRAB) · crustaceans: crab
25F716(CRAB)(+4) · crustaceans: crab (+ animal behaviour)
25F716(CRAB)(+45) · crustaceans: crab (+ animals eating and drinking)
25F716(CRAB)(+451) ·
crustaceans: crab (+ animal in search of food)