第 1 季 共 15 集
播出时间：2005年9月20日
第 1 集 Episode 1
播出时间：2005年9月20日
People all over the world experience bizarre encounters involving strange new creatures in the oceans. Among those people are Laura Daughtery, a marine biologist and single mother working in California, Richard Connelly, a Louisiana family man fishing in the Gulf of Mexico, and Miles Bennett, a North Carolina teen who finds one of the creatures' eggs.
第 2 集 Episode 2
播出时间：2005年9月27日
After a mysterious animal carcass is discovered on the shore of Sullivan's Island, Laura and Rich head there to look for some answers but instead get detained for questioning. Also, a team of scientists face a hazardous autopsy of the deceased creature. Meanwhile, Miles decides to name his new discovery Nimrod but faces panic and trouble when Savannah throws a party at which point Nimrod ends up escaping.
第 3 集 Episode 3
播出时间：2005年10月4日
The phenomena becomes more widespread as similar creatures wreak havoc on the coast of Texas. Laura gets more upset after she loses her job, while Rich still has a difficult time getting over the loss of his brother. Rich's situation gets worse when he starts to hear his brother's voice when he is near water. Cirko and Lee find that the creatures have been digging under the ocean bed, which could link them to global warming. Meanwhile, Miles discovers that it's not safe to raise Nimrod in the backyard when lightning strikes.
第 4 集 Episode 4
播出时间：2005年10月11日
Laura and Jackson head out to sea where she ends up using a GPS device to track one of the creatures. Rich finds proof that the sinkholes in his visions are real causing him to continue obsessing over his brother's death. Meanwhile, Lee tries to talk Cirko out of telling the Pentagon that the new species should be considered extremely dangerous.
第 5 集 Episode 5
播出时间：2005年10月18日
Laura and Richard reunite and use a GPS device to track one of the creatures to a local pier in California while Cirko and Lee consider asking Laura to join them in their investigation. Meanwhile, Miles and Phil fight to keep Nimrod a secret when suspicious Animal Control officers search for a missing neighborhood dog.
第 6 集 Episode 6
播出时间：2005年10月25日
Cirko's life is in danger after he discovers the origin of the mysterious new species. Laura and Rich begin to fear for their own safety when they come into possession of a much sought after sea orchid. Miles sneaks Nimrod out of the house when his parents realize that he's been secretly keeping the animal as a pet.
第 7 集 Episode 7
播出时间：2005年11月8日
Jackson comes to Laura and Rich's aid after they find that Laura's home has been broken into. Miles gets in trouble with the law in his attempt to free Nimrod. And Lee discusses Cirko and the creatures with his superiors.
第 8 集 Episode 8
播出时间：2005年11月15日
Jackson helps Laura and Rich build a submersible so that they can visit a site where the creatures spawn. Meanwhile, the Bennett's consider boot camp as a way to discipline Miles.
第 9 集 Episode 9
播出时间：2005年11月22日
Trapped in the submersible, Laura fears survival is impossible while Rich begins to hallucinate. Miles worries about Nimrod when he hears of trouble at the marine docks. Phil helps Miles look for Nimrod but they discover something else.
第 10 集 Episode 10
播出时间：2005年11月29日
Laura and Rich are in for another shock when they leave the ocean floor and return to the surface. Meanwhile, Savannah suspects that Nimrod's responsible for Miles ending up in the hospital.
第 11 集 Episode 11
播出时间：2006年1月3日
Rich and Laura try to get the footage of their trip to the ocean bottom to a news station before Lee can stop them. Meanwhile, Miles must watch as doctors prepare Nim for an autopsy.
第 12 集 Episode 12
播出时间：2006年1月10日
On the run with Rich, Laura encounters a mysterious person who claims to know the origin of the creatures. Meanwhile, Miles fears the worst when two of Caitlin's friends vanish at the beach.
第 13 集 Episode 13
播出时间：2006年1月24日
The search for the mysterious force responsible for the creatures leads Laura and Rich to an abandoned lab. Meanwhile, Miles joins the aquarium crew in searching for the field of unhatched eggs.
第 14 集 Episode 14
播出时间：2006年1月31日
Laura and Rich decide that it's time to get some answers from Lee as Laura considers going back home. Meanwhile, Miles gets in trouble with the local residents after a violent incident with a bully.
第 15 集 Episode 15
播出时间：2006年2月7日
As a massive tsunami heads for the east coast, Laura must save Rich by heading to North Carolina where Miles and his family are trying to escape with their lives.
