Empty circles are the nematocysts, or stinging cells, of jellyfish that have been packed together and wrapped tightly into packages of feces in the beginning of the lobster's digestive tract.

How many species of jellyfish are there? Jellyfish are sometimes called sea jellies. They belong to a group called Medusozoa which is divided into four classes: Hydrozoa, Scyphozoa, Cubozoa and ...

Jellyfish can produce offspring both sexually ... Moon jellies and their cousins, which include lion’s mane jellies and sea nettles, are known as true jellies. They belong to the class Scyphozoa ...