Cerithiumsp., India. Cerithium crawling out of a bucket. The common name for Cerithium is "horn shell." This species was collected on mud in a mangrove swamp. Note the long snout, and the tentacles, which are short, stubby, and have eyes at their tips.
John B. Burch (photographer; copyright holder), Mollusk Division, Museum of Zoology, University of Michigan-Ann Arbor