Fiddlehead

Fiddleheads are plants in  which resemble the head of a  due to their twisted stem and curling head, hence their name. In real life, fiddleheads are the furled fronds of young ferns, and in Pikmin 2, they are common in watery or damp environments and are used as scenery in many caves. Like in real life, fiddleheads reproduce via the release of s rather than using and s. This is never shown in-game, but is mentioned in Captain Olimar's notes.