Predatory snail may have hitched a ride in a ship's ballast water. Learn about its ecological impact and potential for spreading.

Ravenous Asian mollusk is believed to have been spread to Chesapeake Bay in ship ballast. Explore the invader's biology and potential impact.

Predatory marine snail feeds on clams, oysters and mussels. Learn how to recognize the species and where to report sightings.

Virginia Institute of Marine Sciences discusses the origins and spread of the veined rapa whelk and describes its current research projects.