Globee

The Globee is a very rare enemy found within the Aquatic Depths biome. It swims directly towards the player when they are submerged in water, but, unlike most enemies, don't deal any contact damage. As these emit a fair amount of light, their entire purpose seems to be to aid the player's vision, as as well as to provide them with the Deeplight Esca.

It can be detected by the Lifeform Analyzer.

Trivia

 * It seems that the Globee's light source is the Deeplight Esca itself, as it can be visibly seen to be carrying it.
 * Its sprite is similar to the Suspicious Looking Eye spawned from the Suspicious Looking Tentacle, which is an Expert drop from the Moon Lord.