★ 6.9
★ 0.0
★ 6.7
★ 7.8
★ 7.9
★ 6.0
★ 8.1
★ 7.2
★ 5.8
★ 5.4
★ 8.8
★ 7.3
★ 6.6
★ 8.6
★ 5.0
★ 8.3
With the help of diver and biologist Laurent Ballesta, a scientific expedition explores three sunken Italian volcanic sites in the Mediterranean.
