light?

in the ocean decreases with depth, with minimal light penetrating between 200-1,000 meters. Depths below 1,000 meters do not receive any light from the surface.

That assumption is completely wrong though. Shark attacks make less than 10% of all deaths directly caused by sea creatures with around 6 to 10 per year. Other potentially dangerous creatures like stingrays are also not as deadly as one might think, with about 2 deaths caused per year. A creature you may not think of, yet by far the most deadly known of, causing about 100 deaths with its poison each year, is the box jellyfish. One of these creatures bears enough toxin to kill 60 people at once. Another Creature, the Puffer fish, also kills around 100 people per year, but he doesn‘t count as those deaths are all caused from eating them.

Obviously, more than only 108 people die each year at sea, not in encounters with creatures but by drowning. Around 236.000 people drown in Oceans another 100.000 people drown in lakes and rivers annually. Most of these people are refugees trying to cross the oceans to get to safer lands. The boats these people put all their hope in are usually crowded old fisher boats that are not made to withstand the currents nor the harsh weather at sea. Many of these ships are caught in storms or sink due to being overloaded.