Woodland Park Zoo Blog

Posted by: Ric Brewer, Communications Seattle sports fans are well known for doing the wave, but did you know that snails also perform their own version? Here's a short video clip of our Partula snails doing what’s called the pedal wave: To get from place to place, snails first lay down a trail of mucus. Then they essentially surf over a trail of their slime. But that's only half of the story. Snails also have two types of muscles working in conjunction to propel them forward. A set of light and dark colored bands of muscle fibers relax and contract, in a process called a pedal wave. These muscles pull the snail forward while the other fibers push from behind. The same process works with most gastropod species, i.e., snails, a Latin term meaning "stomach-foot" that accurately sums up their anatomical structure! And that super tiny snail in the clip? That’s a baby Partula , that starts out life little more than the size of the head of a pin, and is seen here at abou...

Most people don't think of snails as being endangered, particularly if they are battling them as they eat through their Swiss chard patch. But Woodland Park Zoo is helping a species of Tahitian tree snail back into their rightful place. The Partula snail used to be represented by around 100 different species in the islands of French Polynesia. But thanks to (or no thanks, in this case) an invasive, and carnivorous, snail, Partula were reduced to about five species in less than 10 years in the 1980s, and only remnant survivors of those few remaining populations. Thankfully, scientists recognized what was happening and rescued about 17 species before they disappeared. Our zoo has been the U.S. hub at captive breeding efforts for one of these species, Partula nodosa, and currently has more than 900 of these half-inch long critters behind the scenes in Bug World. A rarity in the snail world, Partula give live birth to a single offspring every 4-6 weeks, as opposed to a typical brown ...