Looked at my Google Web History today and found some mysterious searches in my top 10. Specifically, they're in the format: ocean2-*.org where the asterisk represents a string of numerals. Clicking on the link produces a "Server not found" message. Doing Whois for "ocean2.org finds very little. So, big concern.
However, this page at serverfault provides a possible explanation--it's a byproduct of doing searches on Google Books (which I often do in my genealogy pursuits).