Lime Kelp

A Lime Kelp is a plant is found underwater in the Underground and Cavern layers. It is most common in the Snow Biome, and spawns very rarely in the regular underground and cavern layer. Lime Kelp has a tendency to blend in with the background thanks to the water, so locating them may prove difficult. Lime Kelp can also be found in Underground Hallow Lakes (not confirmed for Crimson or Corruption). They can be sold for 20 silver coins.