La Jolla Underwater Rocks and Structure

[isghj]

Do these locations have common names?

Probably won't go out far enough to reach most of these locations, but I was just curious if there's any information on any of them, especially #3 which is just bizarre.

It looks too straight to be natural but what would have created it? I suppose it's possibly just a data error, there's plenty of artefacts in this data set so it could just be a glitch, but looks too precise compared to other instances on the map.

If anyone has a more accurate data set I can use instead that would be appreciated, since this set has pretty bad noise for the south ridge of the canyon, north west of the point. This data is from: http://www.ngdc.noaa.gov/dem/squareC.../download/3543