water beetle: any of numerous aquatic beetles usually having a smooth oval body and flattened hind legs for swimming
beetle: insect having biting mouthparts and front wings modified to form horny covers overlying the membranous rear wings
polypore: woody pore fungi; any fungus of the family Polyporaceae or family Boletaceae having the spore-bearing surface within tubes or pores; the fruiting bodies are usually woody at maturity and persistent