Jellyfish can be made into jelly with +20 blood, which can lower the body temperature. It is a cooling food needed when a volcano erupts.

It is said that jellyfish can be made into Shui Mu hats, which can unlock the obsidian technology and reduce the production cost.

Method of catching jellyfish: (1) Stop, but it will be caught by electric (2) insect nets, which will consume cobwebs. Not recommended, cobwebs are a bit rare (spiders can be ignored in the normal world) (3) Fishing by boat.