The Mahalo Top 7
- Wikipedia: Sea Urchin Entry
- ReefKeeping.com: Sea Urchin Information
- Canadian Fisheries: Sea Urchin Information
- National Geographic: Sea Urchin Photos
- American.edu: Sea Urchin Fishery and Overfishing
- National Geographic: Genome Reveals Striking Similarities to Humans (November 9, 2006)
- Google Video: Sea Urchin Ballet (Time 0:51)
Sea Urchin Background and Information
- Microscopy.co.uk: Sea Urchin Science
- Wikipedia: Sea Urchin Entry
- SeaShells.org: How to Preserve Sea Urchins
- Marlin.ac.uk: Habitat Preferences and Distribution
- University of Virgin Islands: Sea Urchin Reproduction
- Exploratorium.edu: Insight from the Sea Urchin
- Monterey Bay Aquarium: Purple Sea Urchin
- ReefKeeping.com: Sea Urchin Information
- Microscopy UK: Sea Urchin Information
- American.edu: Sea Urchin Fishery and Overfishing
- Canadian Fisheries: Sea Urchin Information
Sea Urchin News and Articles
- Wired.com: Sea Urchin Eggs Plus Marijuana Equal Amazing New Drugs (November 4, 2007)
- NPR: Decoding the Sea Urchin Genome (November 10, 2006)
- National Geographic: Genome Reveals Striking Similarities to Humans (November 9, 2006)
- Science Daily: Sugar-coated Sea Urchin Eggs Could Have Sweet Implications For Human Fertility (September 14, 2004)
- BBC News: Red sea urchin 'almost immortal' (November 24, 2003)
- NewScientist: Antarctic sea urchins give birth despite the spines (March 23, 1991)
Sea Urchin Videos and Images
- Google Video: Sea Urchin Search Results
- National Geographic: Sea Urchin Photos
- Arkive.org: Edible Sea Urchins
- YouTube: Sea Urchin eating a cookie (Time 4:19)
- Google Video: Sea Urchin Ballet (Time 0:51)
- YouTube: Sea Urchin Diver (Time 5:25)
Sea Urchin Recipes and Cooking
- California Sea Urchin Commission: From the Ocean to the Restaurant
Sea Urchin Books and Merchandise
- Amazon.com: Sea Urchin Search Results
- Google Books: Sea Urchin Search Results