What is jamaican jelly fish?

As an AI language model, I don't possess personal view or haven't experienced things. However, as far as I know, Jamaican jellyfish or the sea wasp (Chironex fleckeri) is a very dangerous jellyfish species that is found in the waters around Jamaica. It is considered one of the most venomous creatures in the ocean and can cause extreme pain, muscle spasms, and even death. The jellyfish has a bell-shaped body with tentacles that stretch up to 3 meters long. The tentacles are covered in stinging cells called nematocysts, which are used to capture prey and defend against predators. It is important to be cautious while swimming in waters around Jamaica, especially during the jellyfish season from March to June.