Ancient Aliens
Did intelligent beings from outer space visit Earth thousands of years ago? From the age of the dinosaurs to ancient Egypt, from early cave drawings to continued mass sightings in the US, each episode gives historic depth to the questions, speculations, provocative controversies, first-hand accounts and grounded theories surrounding this age old debate.

Season 14 · Episode 5 ·
They Came from the Sea
Lurking in the oceans are creatures that defy explanation, such as octopuses that can edit their own DNA or animals that can regenerate their entire brain; examining if the oceans are acting as a giant petri dish for alien genetic experimentation.
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Episode 5 of season 14 of Ancient Aliens: “They Came from the Sea”. Aired 2019-06-28. Watch it online free on ZapFlix.