Carybdea murrayana

Carybdea murrayana, the South African box jellyfish, is a venomous species of cnidarian, in the small family Carybdeidae within the class Cubozoa.

Description
This small box jellyfish grows up to 7 cm across and may have tentacles of up to 2 m in total length. It has a transparent box-shaped bell with a very long tentacle trailing from each corner.

The animal is described as being robust and having a well sculpted in particular, single rooted with multiple stems, velarial canals 2 per octant, pedalia knee bend upwards turned volcano shaped. Also known to have a brownish pigmentation of the phacellae and pedalia.

Distribution
This jellyfish is found from the north of Namibia around the South African coast to Port Elizabeth from the surface to a depth of at least 35 m underwater.

Ecology
This jellyfish is often seen in swarms. The tentacles have a painful sting, although the sting is not known to be fatal. It is eaten by the sunfishes, Mola mola and Mola ramsayi, as well as the slender sunfish, Ranzania laevis.