The new study helps underscore the Cambrian period as a critical time for jellyfish evolution. Jellyfish and their relatives are thought to be one of the earliest animal groups to have evolved.

Jellyfish populations tend to wax and wane as conditions and their food supply does. In many species, this oscillation occurs in a 20-or-so-year cycle.

Even with no brains, jellyfish can learn from their mistakes In a changed environment, jellyfish change their response to potential collisions. Elizabeth Rayne – Oct 13, 2023 9:54 AM | 47 ...