Moon Jellyfish :
Moon jellyfish are the most common and most well know type of jellyfish. They are a clear jellyfish but usually are illuminated by colorful lights in aquariums. Their bells usually grow up to 12in, in diameter. They also do not pose any threat to humans because their sting is not strong enough to do damage to human skin, so they are usually safe to pick up and touch, many people keep them as pets but only usually live for 8 - 12 months. Moon jellyfish can be found in all oceans of the world.
Scientific name : Aurelia aurita
class : Scyphozoa
Pacific Sea Nettle
Pacific sea nettles, often known as west cost sea nettles are another common type of jellyfish. Their bells and tenticles are both orange ish yellow, while their oral arm (the part underneath their tenticals) is usually a grey/white color. they usually live for about 6 months in the wild. Their bells can grow up to 30in in diameter while their tenticals can grow up to 16ft long in rare cases. They usually have 24-40 tenticles. Their stings are painful but overall not super dangerous.
Scientific name : Chrysaora fuscescens
class : Scyphozoa
Compass Jellyfish