Jan Hamrsky: Great diving beetle (Dytiscus marginalis), refilling its air supply under the wing cases
Jan Hamrsky: Great diving beetle (Dytiscus marginalis) female, detail of the head
Jan Hamrsky: Great diving beetle (Dytiscus marginalis), female
Jan Hamrsky: Great diving beetle (Dytiscus marginalis) female, hiding in freshwater red algae (Batrachospermum moniliforme)
Jan Hamrsky: Great diving beetle (Dytiscus marginalis), refilling its air supply under the wing cases - elytra
Jan Hamrsky: Great diving beetle (Dytiscus marginalis), hind oar-like leg detail
Jan Hamrsky: Great diving beetle (Dytiscus marginalis) female, detail of the wing cases "elytra"
Jan Hamrsky: Great diving beetle larva (Dytiscus marginalis)
Jan Hamrsky: Great diving beetle larva (Dytiscus marginalis)
Jan Hamrsky: Great diving beetle larva (Dytiscus marginalis)
Jan Hamrsky: Great diving beetle larva (Dytiscus marginalis) feeding on a dragonfly nymph
Jan Hamrsky: Great diving beetle larva (Dytiscus marginalis) feeding on a dragonfly nymph
Jan Hamrsky: Great diving beetle larva (Dytiscus marginalis) feeding on a dragonfly nymph
Jan Hamrsky: Great diving beetle larva (Dytiscus marginalis) feeding on a dragonfly nymph
Jan Hamrsky: Great diving beetle larva (Dytiscus marginalis), feeding on mayfly larva
Jan Hamrsky: Great diving beetle larva (Dytiscus marginalis), feieding on small fish
Jan Hamrsky: Great diving beetle larva (Dytiscus marginalis)
Jan Hamrsky: Great diving beetle larva (Dytiscus marginalis)
Jan Hamrsky: Great diving beetle larva (Dytiscus marginalis), feeding on mayfly nymph
Jan Hamrsky: Great diving beetle (Dytiscus marginalis), female
Jan Hamrsky: Great diving beetle larva (Dytiscus marginalis) feeding on a small fish.
Jan Hamrsky: Great diving beetle (Dytiscus marginalis) refilling its air store by the water surface.
Jan Hamrsky: Great diving beetle larva (Dytiscus marginalis)
Jan Hamrsky: Great diving beetle (Dytiscus marginalis)
Jan Hamrsky: Great diving beetle (Dytiscus marginalis)
Jan Hamrsky: Great diving beetle (Dytiscus marginalis)
Jan Hamrsky: Great diving beetle (Dytiscus marginalis)
Jan Hamrsky: Great diving beetle (Dytiscus marginalis)
Jan Hamrsky: Great diving beetle (Dytiscus marginalis)
Jan Hamrsky: Great diving beetle (Dytiscus marginalis)