diving beetle on ice pond

animal aquatic arthropod awakening beetle bug cole common crawling dispersing diving dries dytiscidae dytiscus ecology entomology exoskeleton fearsome fierce flight fly hibernation hydro hydrobionts hydrophilidae hydrous ice insect insects invertebrate its mating melting moves nasicornis nature notatusm object organism organisms oryctes pest predacious red reservoir rhantus scary scavenger settling shell smooth spring surface time vivid water watertiger wild wildlife wings