A group of grad students have booked passage on the fishing trawler Harbinger to study the effects of global warming on a pod of Orcas in the Bering Sea. When the ship's crew dredges up a recently thawed piece of old Soviet space wreckage, things get downright deadly. It seems that the Russians experimented with tardigrades, tiny resilient animals able to withstand the extremes of space radiation. The creatures survived, but not without mutation. Now the crew is exposed to aggressively mutating organisms. And after being locked in ice for 3 decades, the creatures aren't about to give up the warmth of human companionship.

With their father killed by a swarm of vampiric sea creatures, Bering Sea adventurers, Joe and Donna, team up with a marine biologist and her devoted deckhand to render the species extinct.

Jack Hardy is the sole survivor of a mysterious submarine disaster in World War II. Now, in 1981, the ill-fated submarine Scorpion has resurfaced, miraculously intact. Naval Intelligence need Hardy's expertise to retrace the course and mission that led to her original disappearance. But what's waiting for them under the grey waters of the Baltic Sea turns out to be much worse than the Russian submarines they're expecting. Wherever Scorpion has been all this time, it's brought some very bad luck back with it...

John Raglan is a seal hunter being hounded by hijackers, so he strands himself on an isolated island in the Bering Sea that is owned by a corporation. During a fierce sea-storm, Raglan rescues the passengers of a floundering ship, which includes the owner of the island, his daughter and her fiancée. The owner threatens to charge Ragland with poaching on private property, and then a gang of seal-skin thieves make an entrance.