ipunchghosts Karma 763 Created 11 years ago Recent Submissions 1. ▲ The seafloor is dark. It doesn't have to be (gergltd.com) 2 points · 8 days ago · 0 comments 2. ▲ New sonar tool is a 'game changer' for mapping the sea floor (science.org) 6 points · 1 year ago · 2 comments All submissions on HN · View profile on HN