Sam 6

Evidence suggests that SCP-3812 caused the disappearance of an entire island off the coast of California. No fewer than 200 individuals in southern California have a vague recollection of such an island existing, and 14 people were unable to justify the disappearances of family members who lived in the area at the time. Additionally, a single ship, moored to a dock, is discovered at the bottom of the sea near where the island is believed to have been.

http://www.scp-wiki.net/scp-3812