New species of the genus Daphnia Sea crab larva (zoëa) Ephippium Ultrastructure of the ephippium of the group Daphnia longispina (O. F. Müller, 1785) (Cladocera) Not determined amphipod Woodlouse Not determined ostracod Barnacle Mantis shrimp Jepe, do not worry! I am leaving! ;-) Clamp shrimp larva Cross-section of the snail shell Snail shell cross-section Peacock eyes Refresh Air sac of the phantom midge larva, which work like a hydrostatic organ - they enable the animal to swim in the horizontal position Slávek in the afternoon Sad eyes... Infected cladoceran Mysterious parasite Caullerya Ostracods Slávek, kiss me :-) Wanna to play with you :-)