Don’t underestimate the Adriatic, a relatively small sea that is enclosed by the mainland of Italy. Here you can see surprising undersea diversity, from odd tube works to starfish that are unlike any other. The shallows, dotted with the unique posidonia plant, are home to interesting fish and crabs that make their way around the sandy bottoms. Deeper dives will reveal octopi and moray eels wavering in their doorways.
At extreme depths you can find the fan mussel, which can grow to be 3 feet (1 meter) in length. Sponges of all shapes and sizes can be seen here, as well.
For better readability of the table, pass into the landscape mode.