New Zealand Mud Snail Invades America

Tiny, spiral-shaped New Zealand Mud Snails have invaded the western U.S. and environmentalists are alarmed. The snails multiply and spread rapidly, clinging to boats, boots and fur. They were first discovered near the Yellowstone National Park as an invasive species threatening native fish and aquatic populations.

From NPS.gov:

In 1994, New Zealand mud snails Potamopyrgus antipodarum were discovered in the Madison River near the park boundary. Subsequent investigations by independent researchers have documented a rapid spread of this exotic species to the Firehole and lower Gibbon rivers.

The long-term effects of the spread remain to be seen, however, it's speculated that the potential exists for the New Zealand Mud Snail to cover stream bottoms. One sample of the Madison River in 1997 found 28,000 of the little invaders per square foot. Quite dense, I'd say.

Current scientific efforts are focusing on measures to stop the spread of the snails and to determine their long-term impact on native wildlife. Alternatives for killing the little pests are also being investigated. However, other than informing the public, to date no specific protocols for control have been implemented.

Readers are cautioned not to confuse the invasive New Zealand Mud Snail with the American Global Warmer Snail. Similarities in brain matter aside, it's important to remember that the New Zealand snail embeds itself in mud whereas the Global Warmer snail nestles itself in sewage. Notably, the New Zealand snail eats mud while the Global Warmer actually produces sewage while it spreads.

Disturbingly, however, the Global Warmer also carries an infection to human brains which results in persistent fright and loud, irrational behavior. Infected humans have been known to fear driving automobiles and possess a desire to eat grasses and ride bicycles. Fortunately, those infected can be easily treated by reading a few books that don't start with the blanket assertion that the end of the world is imminent.