Step 3 - Slice the squash. Just take a sharp knife and cut of both ends (about 1/4 of an inch, or half the width of an average woman's little finger) Slice 1/2-inch thick slices. Prepare quickly, (if you leave it sit out cut up for more than a half hour, it will start to discolor).
The benthic zone begins at the edge of the sea at the intertidal zone, extends out along the continental shelf, and continues down the continental slope to the abyssal plain, thousands of meters below sea level.
Since the photic zone is where almost all of the photosynthesis occurs, the depth of the photic zone is generally proportional to the level of primary production that occurs in that area of the ocean. About 90% of all marine life lives in the photic zone.