Conversely, the cannonball jellyfish is more roundish and has a slightly rougher umbrella that is brownish on the edge and grows up to 25 cm or 10 inches in diameter.

The bell ranges from a variety of colors such as white to light yellow, brown, blue, pink or green.

Laterally, the species has a reddish-brown pigmentation from the organs underneath such as the pinkish digestive glands.

The mushroom jellyfish lack tentacles; instead, they have 8 oral arms with finger-shaped appendages with nematocyst warts underneath the middle of the umbrella.

[7] Rhopilema verrilli are distributed throughout the Western Atlantic of the U.S. and Canada, but they reside mostly along the coast in the northern Gulf of Mexico, and between North Carolina and New England.

[12] The mushroom jellyfish survive off of tiny plankton parts, which are pushed out of their umbrella by the water and are caught with their finger-like appendages.

The planula floats around until it attaches itself onto a hard substrate, metamorphosing itself into a polyp called, scyphistoma.

[4] The mushroom jellyfishes are served pickled, or dried out into paste in Asian countries such as China and Japan.