Was surfing reading about the Deep Sea World Record made by Jacques Piccard and Don Walsh (35,810 feet, Mariana Trench) and stumbled across this website which has maps of the worlds oceans available to purchase.
You can even preview the maps on the website with a very nice zoom feature.
Check them out, especially the Pacific Ocean. The formation of underwater mountains and valleys in the Western region are extraordinary. And there seems to be weird symmetrical cracks down the entire west coast of Canada, North America and South America. There are also symmetrical cracks in the Atlantic also.
http://www.maps.com/map.aspx?cid=1541&pid=15757