The Sea Monkey can steal every tool from the player. The player can't control Robin while this is playing. If the Sea Monkey makes contact while Robin still has an item in her hands, a short animation plays of trying to fend the creature off. If the player puts away their equipment before the Sea Monkey touches them (press E or the number key for the equipped item), it will still perform the lunge animation but will not take anything. This is followed by a fast-straight-line charge that can be evaded by moving quickly to the sides. This 'attack' has two cues: A distinct chirping call from the creature and an animation of it holding still, level with the player, and wiggling its fingers. However, if the player is holding a tool, it will approach them and attempt to steal the item.

The Sea Monkey is passive and spends most of its time swimming aimlessly. The crest is split into four sections of pale blue and edged with yellow.

Adorning the top of the head is a large crest that can fold in and out. A pair of antenna-like protrusions are seen on the lower jaw, colored purple and tipped with blue. There are two slit-shaped openings on the body, one on the chest and another on the lower flank. Above this fin on the dorsal side are a pair of more rounded fins with a small triangular dorsal fin in front of them. The underside of the body is pale gray and has a long fin that ends with a notch before the tail. It has a pair of two-fingered squat forearms, each finger ending with a round yellow suction cup. The Sea Monkey is predominantly light purple in color, with a larger blue stripe going down from its head to its forearm, and a smaller yellow stripe stretching down to its tail. The Sea Monkey is a medium-sized, intelligent fauna species with a habit of stealing interesting objects.

Subnautica below zero all items wiki