Presence of New Zealand mudsnails has been detected, but Infestation Level is unknown.
No mudsnails were observed at the site.
Rare: You have to search numerous rocks and wood to find a snail.
Occasional: Snails are present on some of the rocks and wood, but not all. There are a few clusters.
scattered: Snails are commonly found on rocks and wood at site, but in limited clusters.
Fairly dense: Snails are commonly found. Heavy clusters of snails on most pieces of substrate.