Chrysaora hysoscella has a thickened bell (manubrium) that can
grow up to 30 cm in diameter. The edges of the bell are
developed into 32 lobes and bear 24 marginal tentacles. These
are arranged in eight groups of three which alternate with eight
sensory organs and are capable of great elongation. The marginal
tentacles are conical in shape with a flattened thicker base
giving the jellyfish a fluted appearance. They are also covered
with clusters of stinging cells (nematocysts). It has a long and
slender manubrium which leads onto 4 oral arms that are fused
for a short distance at its base. Typically Chrysaora hysoscella
is yellowish white in colour with a highly distinctive brown
pattern like the radii of a compass.May be confused with the
common jellyfish Aurelia aurita when stranded. Aurelia aurita
however, has shorter tentacles with no brown v-shaped markings
on the bell. Instead it has 4 purplish-blue horseshoe shaped
gonads that are easily distinguished through the upper surface
of the bell. The stinging