Most marine invertebrates known to produce sound do so by stridulation or rubbing two body parts together. Image courtesy of David Clayton, Sultan Qaboos University.
Ribbon seals are a northern Pacific species that gives birth, nurses their young, and molts on the offshore pack ice of the Okhotsk, Chukchi, and Bering Seas. Image credit: NOAA.
How did odontocete hearing evolve?
Cetaceans evolved from ancestors that had air-adapted ears. Their entire body, including their auditory systems, underwent significant adaptations related to living in water. Image credit: Thewissen lab, NEOMED.
Dr. Darlene Ketten
Dr. Darlene Ketten's research focuses on the physical shape and function of the hearing and sound producing organs of all types of animals.
The California mantis shrimp, Hemisquilla californiensis, produces sounds by vibrating its carapace, similar to the American lobster. Image credit: Roy Caldwell, University of California, Berkeley.