Take google earth 'flight' to Hawai and focus on seabed around it. You will soon notice many strange long stripes, some of them together forming unusual geometrical shapes. Take look at triangle some 250 miles south west of Honolulu, also notice whole mish-mash of lines all around Hawai.

Lat. 18° 9'42.68"N
Lon. 159°21'20.08"W

Are these maybe satellite track lines or real seabed picture ??