Jellyfish are found on the 2nd and 3rd levels of the ocean, swims in swarm and are agressive. Like the Transparent Fish, a Jellyfish attack the player all the time regardless if there is blood present, or the time of day.
Swarm of jellyfishes
Jellyfish glowing at night
Meat[]
Jelly
It can be killed by one stab with a knife and produced 1 Jelly.
The Jelly cannot be cooked and reduces hunger by 5%.