Infestation Levels of New Zealand Mud Snails:

Snail Identification
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Presence of New Zealand Mud Snails has been detected, but Infestation Level is unknown.

None Found:

No Snails were observed at the site.

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(rare): You have to search numerous rocks and wood to find a snail.

Infestation Level: Trace

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(occasional): Snails are present on some of the rocks and wood, but not all. There are a few clusters.

Infestation Level: Low

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(scattered): Snails are commonly found on rocks and wood at site, but in limited clusters.

Infestation Level: Moderate

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(fairly dense): Snails are commonly found.  Heavy clusters of snails on most pieces of substrate.

Infestation Level: High

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