Jellyfish Diving Gear is an accessory crafted by combining Jellyfish Necklace and Diving Gear at a Tinkerer's Workshop. It combines the functionalities of its ingredients, granting the ability to swim, breathe for an extended time, and emit light underwater (in the Desktop version, it gives a very faint glow out of water and honey and its brightness is significantly increased when submerged) and additionally slowing the rate at which damage from drowning is taken. Apart from combining these effects into a single accessory, it does not have other unique properties.
Like all diving equipment, the Jellyfish Diving Gear prolongs the underwater breath to 1minute and 33.33seconds or, while holding the Breathing Reed, to 3minutes and 6.67seconds. In addition, the rate at which health is lost while drowning is reduced to 1/4 or 1/8, respectively. While it is possible to equip multiple pieces of diving equipment, doing so does not cause them to stack.