Specimens of Cassiopea from Meirim River estuary: (1) general view of the touristic area with dozens of specimens; (2, 3) details of some large specimens, around 17 cm; (4, 5) details of formalin preserved large specimens; (6–8) details of oral arms, marginal lappets and a rhopaliar niche, respectively. Scale bars: 4–7 = 1 cm, 8 = 1000 µm.