| More than 65 kilometres long, 15 kilometres wide and two kilometres deep, the Gully's ecosystem includes shallow sandy banks, the deep-water canyon environment, and portions of the continental slope and abyssal plain. |
| The islands are perched at the ragged edge of the continental shelf, right before it plunges more than 2 miles down to the abyssal plain. |
| The shallowest instruments will be placed on a rocky pinnacle just 17 metres below the surface, while the deepest node will sit on the abyssal plain, 2.7 kilometres down. |
| Second, pelagic calcareous oozes are the obvious modern analogues of ancient abyssal plain calcilutites. |
| The sea basin is a northward-tilting abyssal plain unmarked by distinctive escarpments or trenches. |
| Oarfish can reach lengths of 60 feet, and live in the abyssal plain, about 6000 feet below the ocean's surface. |
