In the Season 1 finale, the approach of winter creates increasingly dangerous diving conditions as the boats take their last trips of the season. Meanwhile, a captain loses a diver in a cave on the ocean floor; and a crew deal with elusive fish, a mechanical breakdown and a fierce wind a long way from the shore.
A diver's light goes out at night just as he's surrounded by sharks; a diver is pushed to the brink of exhaustion while filling in for a sick coworker; a superstitious crew member tries to improve a boat's performance. Also: A restaurant conducts a survey of spear- and line-caught fish.
A diver abandons another at dusk; a diver's reputation is on the line after a run-in with his captain; a diver makes a shocking discovery near a wreck; a captain searches for a replacement for a diver he dismissed.
Divers nearly come to blows after tension aboard a vessel continues on land; a captain has a scary encounter with a moray eel; a crew deal with a diver who may have decompression sickness; an ongoing feud between a captain and a diver reaches its end.
A diver gets fired for disobeying orders by using the wrong kind of spearhead. Elsewhere, a captain purposely runs out of air to land a big fish, while a diver is driven from the water by sharks, but another is pulled to the surface by a barracuda.
A diver is low on air but is hesitant to surface during an electrical storm; a diver questions his career choice after surviving a shark encounter and a confrontation with a recreational dive boat; a captain and a mechanic fight over a boat in bad condition.