Jan Hamrsky / Case-building caddisfly larva (Trichoptera), Europe, June. Controlled conditions.

Jan Hamrsky / Free-living caddisfly larva (Rhyacophilidae) exploring small hydra, Europe, July, controlled conditions

Jan Hamrsky / Free-living caddisfly larva (Rhyacophilidae) climbing on freshwater sponge (Spongilla lacustris) Europe, July, controlled conditions

Jan Hamrsky / Free-living caddisfly larva (Rhyacophilidae) close up of branched gills and anal prolegs detail, Europe, July, controlled conditions

Jan Hamrsky / Empty caddisfly cases after emerging (Trichoptera) Europe, August, controlled conditions

Jan Hamrsky / Caddisfly larvae (Trichoptera), larva is scraping algae from other caddisfly case, Europe, July, controlled conditions

Jan Hamrsky / Caddisfly larva (Trichoptera), climbing on the sunken wood, Europe, July, controlled conditions

Jan Hamrsky / Caddisfly larva (Trichoptera), in the case made of wood pieces and sand grains, Europe, July, controlled conditions

Jan Hamrsky / Caddisfly larva (Trichoptera), in the case made of plant stems, Europe, July, controlled conditions

Jan Hamrsky / Caddisfly larva (Brachycentrus subnubilus) Europe, July, controlled conditions

Jan Hamrsky / Caddisfly larva (Brachycentrus subnubilus) collecting organic debris from the current, Europe, July, controlled conditions

Jan Hamrsky / Caddisfly larva (Brachycentrus subnubilus) collecting organic debris from the current, Europe, July, controlled conditions