posted on May, 30 2008 @ 07:24 PM
Looks like a sand bank or silt.
Here is a picture of Vancouver, Canada and the area from Google Earth which shows similar silt/sand banks from the Frasier River.
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Theres even a part when you are crossing over from the mainland to Vancouver Island via ferry when you can see a distinct line from where the fresh
water and mud from the river mixes with the cleaner ocean water.
But you never know, maybe it is a big sea monster.