Jellyfish are difficult to tell apart, so if you come across a jellyfish at the beach or at SeaQuest Folsom, California, it can be difficult to know what kind of jellyfish you’re looking at! If you see a jelly with a white translucent bell and four horseshoe-shaped pink or purple circles, you’ve likely found a Moon Jellyfish!
Moon Jellyfish are fascinating creatures that can be found in coastal waters all around the world. They are most often found near the coastlines of North America and Europe, where the temperatures are close to their ideal. The moon jellyfish can survive in temperatures between 21 and 88 degrees Fahrenheit but prefers the range of 48 to 66 degrees. .
In 1991, 2,478 jellyfish polyps (an early phase of the jellyfish life where they attach to surfaces) went to space in the space shuttle Columbia! Scientists wanted to study the effect weightlessness would have on the jellyfish as they developed. Like humans, jellyfish use calcium crystals to sense gravity and judge which way is up. Scientists were hoping to compare the development of the calcium crystals in space to those on Earth, in hopes of getting a glimpse at how people born in space might adjust.
They discovered that the calcium crystals seemed to develop normally while in space. When the jellyfish returned to earth, there were over 60,000 of them! However, when they came back down, scientists found that the jellyfish who had been born in space had a hard time telling which was up and down. The new jellyfish suffered from a bad case of vertigo!
In the wild, Jellyfish can form into large groups or “smacks.” These smacks can then congregate into larger groups called blooms— which can consist of over a thousand jellies. Blooms are more likely to form in the summer months since the rising temperatures encourage the jellyfish to reach maturity more quickly.
There are many causes of blooms: overfishing of jellyfish predators, coastal development, and water becoming oxygen-deprived. With fewer predators, more of the jellies are likely to survive in an area. Coastal development gives extra space for jellyfish polyps to form, so more jellyfish will be born in an area. Oxygen-deprived regions are difficult for most species to endure, but jellies thrive there! In those areas, there are less likely to be predators, which helps them survive.
If you’re planning your trip to SeaQuest Folsom, California, make sure to leave plenty of time to watch the moon jellyfish in their habitat. While you’re there, check out the other amazing animals that call our facility home, like the Blacktip Reef Shark or our friendly Iguanas.
Make sure to book your tickets to meet the moon jellyfish at SeaQuest Folsom, California today!