The jellyfish that does not sting is called the moon jelly. It is the most common jellyfish found in UK seas and can often be seen washing up on our beaches. As an expert in marine life, I can assure you that there is no need to worry about being stung by this particular jellyfish, as it does not have the ability to sting humans.
The moon jelly (Aurelia aurita) is a fascinating creature that belongs to the class Scyphozoa. It is transparent and has a bell-shaped body, which can reach a diameter of up to 40 centimeters. The jellyfish gets its name from the four horseshoe-shaped reproductive organs that can be seen through its translucent body, resembling a full moon.
One of the reasons why the moon jelly does not sting humans is because it lacks stinging cells, known as nematocysts, which are present in other species of jellyfish. These nematocysts are used by jellyfish to capture prey and defend themselves against potential threats. However, the moon jelly has evolved to rely on a different feeding strategy, primarily using its tentacles to capture plankton and small fish.
I have personally encountered moon jellies while swimming in the ocean, and it was a truly mesmerizing experience. Their graceful movements and ethereal appearance can be quite captivating. Despite their delicate nature, moon jellies are actually quite resilient and can survive in a wide range of water temperatures and salinity levels.
It is important to note that while moon jellies do not pose a threat to humans, it is always advisable to exercise caution when swimming in areas where jellyfish are present. Some species of jellyfish, such as the lion’s mane jellyfish, can deliver painful stings that may require medical attention. If you do come across a jellyfish while swimming, it is best to give it a wide berth and avoid any contact.
The moon jelly is a common jellyfish found in UK seas that does not sting humans. Its lack of stinging cells makes it harmless to us, and its presence on our beaches should not be a cause for concern. However, it is always important to be aware of other species of jellyfish that may be present in the same area, as they can deliver painful stings. Stay safe and enjoy the wonders of our marine life!