Imagine taking an ocean voyage. But instead of going around the world, you travel straight down to the bottom of the ocean.
On your trip, you pass through the five distinct layers of the ocean. You go from sunny to pitch-black, from warm to ice-cold, and from very active water to very still water. At first, there’s almost no pressure, but at the bottom, the pressure is bone-crunching. While some sea creatures live in several zones, others can live in only one zone.
