Rough keyhole limpet)
Rough keyhole limpet)
Photo by Mary Jo Adams
Beach Watchers, Washington State University
Education. Research. Stewardship.
In spite of its common name, the rough keyhole limpet is not a true limpet but is more closely related to abalones. Its gills are more primitive than those of true limpets and water circulation through the animal is also different. In addition, unlike limpets, which tend to be herbivores, this species prefers a carnivorous diet, feeding more on encrusting sponges and bryozoans than on algae. It is preyed on by several species of sea stars.
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