Accompany zoologist Nigel Marven as he visits seven different seas, exploring the underwater life from seven different time periods up to the late Cretaceous period. Among the formidable creatures our intrepid explorer meets are giant sea scorpions, Megalodon – the meanest shark of all time, massive armored fish and, most terrifying of all, the vicious 60-foot Mosasaur with a jaw so huge it could bite a tree in half.
| Season | From | To | Episodes |
|---|---|---|---|
| All Seasons | |||
| Specials | 1 | ||
| Season 1 | 3 | ||
| Unassigned Episodes | 0 |
| Season | From | To | Episodes |
|---|---|---|---|
| Unassigned Episodes | 4 |
| Season | From | To | Episodes |
|---|---|---|---|
| Season 1 | 0 | ||
| Unassigned Episodes | 4 |
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