Snakeskin Chiton

Sypharochiton pelliserpentis

This species features a distinctive girdle with a snakeskin-like pattern, giving it its common name. Sypharochiton pelliserpentis can be identified by its olive coloration and the absence of longitudinal striping on its valves, which sets it apart from its close relative, Sypharochiton sinclairi. The snakeskin chiton is typically found on rock surfaces above the mid-tide mark, thriving in various shore environments from inner estuaries to high-energy surf beaches. It is prevalent around the coasts of New Zealand, including the Chatham Islands, and also inhabits areas in Tasmania, Victoria, and New South Wales in Australia. Densities can reach up to 228 individuals per square metre, indicating its common presence in these regions. Sypharochiton pelliserpentis is a benthic organism, generally residing in shallow waters, with recorded depths not exceeding 40 meters, and most occurrences found shallower than 10 meters. It feeds primarily on algae, grazing on surfaces where it is attached. The reproductive cycle involves the release of eggs that hatch into planktonic larvae, which eventually settle on the substrate as young adults. Encounters with this chiton during dives can be frequent, as they often cover rocky surfaces and are easily spotted due to their unique appearance. The conservation status of Sypharochiton pelliserpentis is not evaluated, but its widespread distribution and high densities suggest it is not currently under significant threat. Divers should be mindful of their habitat and avoid disturbing these organisms while exploring their environments.