The chitons' eight plates differentiate them from all other molluscs. These omnivores spawn grey-green eggs, and fertilization occurs externally. Miniature adults form by sixteenth day.
Description: Mopalia mucosa English: Polyplacophora on rocks at Tribune Bay, Hornsby Island, British Columbia, Canada. Date: 13 July 2009, 14:04. Source: What is this? Uploaded by Snowmanradio. Author: Cloned Milkmen from Canada. Other versions: . Camera location49° 31′ 30.55″ N, 124° 38′ 21.45″ WView all coordinates using: OpenStreetMap 49.525152; -124.639291.
Herbivore found on crustose and erect coralline algae, its major food and the source of its pigment. 15 mm long, 10 m deep. Its scraping organ, the radula, contains magnetite, hard enough to scrape the corallines. The chitons are broadcast spawners with external fertilization.
Summary[edit] Description: This is a Flame Lined Chiton (Tonicella lokii) I originally thought it was a Lined chition (Tonicella lineata) Seen at intertidal zone of Golden Gardens Park, Seattle Washington during -3.6 foot low tide sea20160606 154. Date: 5 June 2016, 11:33. Source: Chiton on a rock. Author: brewbooks from near Seattle, USA. Camera location 47° 41′ 42.68″ N, 122° 24′ 19.43″ W: View all coordinates using: OpenStreetMap - Google Earth: 47.695189; -122.405398.