Jellies await your arrival upon entering the Aquarium's main
"Under the Bay" exhibit areas. Ambient lighting sets the mood to
enjoy these beautifully mesmerizing invertebrates. Front and
center is a 725-gallon cylinder tank displaying Moon Jellies,
while a wall-mounted, 740-gallon gallon kriesel tank showcases
the Pacific Sea Nettles. Worldwide, there are more than 200
species of jellies. Jellies are made up of 95% water and have no
heart, brains, bones or other organs. Their bodies let off
pulsations, but movement is primarily controlled by bay and
ocean currents. Jelly species are being directly affected by
climate change, as their populations and range continue to
increase as water temperatures rise. Information on this
increase in jelly populations, referred to as jelly blooms, is
also shared in this exhibit. Moon jellies, Aurelia aurita, are
found in temperate and tropical waters worldwide, including
along the Northern California coast. Moon jellies are a fast-
growing and fairly short-lived species, deve