Cocos Island is a small island about 300 miles offshore of the Pacific side of Costa Rica.
- Hammerhead Shark (awsomeendangeredanimals.wordpress.com)
- NMFS Announces Closure of the Commercial Gulf of Mexico Aggregated Large Coastal Shark and Gulf of Mexico Hammerhead Shark Management Groups (louisianalagniappe.wordpress.com)
- Video of the Day ~ Mission Blue Cocos Expedition (mission-blue.org)
- Hammerhead Sitings (wjhg.com)