Ahead of the continental shelf, the slope of ocean floor becomes abruptly steep. The biggest feature of these slopes is that they may extend upto a depth of 3600 to 9100 meters. Here, the deposit of alluvial soil is found very less. Due to the lack of light and nutritional substances, the amount of vegetation and sea creatures is found to be less. These slopes are found on 8.5 % part of the total area of oceans. Their slope is between 2 degree to 5 degree.
