They’re a pretty familiar sight to our Cornish beaches over the summer, and always provide interesting photos, debates and conversations but truthfully how much do you know about jellyfish?

Here, you’ll find myCornwall’s top facts list about these gelatinous creatures:

1: Jellyfish are closely related to sea anemones and corals, but instead of living attached to the seabed, they’re at the mercy of the ocean currents, hence why we often find them washed up on our shores.

2: They’re so delicate that even one tiny air bubble caught inside their body will tear it apart. Which is probably why it’s best to leave them be to their content and strange aquatic gliding.

3: Jellyfish have a two stage lifecycle. The ‘parents’ of the jellies we find in our seas are actually tiny anemone-like creatures called jellyfish polyps, which is where jellyfish grow.

4: Within a few hours, millions of baby jellyfish are produced at once, and these hungry little stingers soon drift away with the currents. If the conditions are right, swarms of jellyfish will be created, which is why it’s common to see so many at once, in one place, around the Cornish coast.

5: The most common jellyfish found in Cornish waters only give a mild sting, like a nettle. However, some very rare visitors to our waters (such as the Portugese Man of War) can give stings that can be very painful and very serious. The most common types you’ll find are Blue, Lion’s Mane and Moon.

A huge thank you to Matt Slater of the Cornwall Wildlife Fund who gave us all this interesting information along with these great photos.