Stream Ancient Aliens Season 16, Episode 2 instantly on NOW

The Top Ten Extraordinary Creatures

40 mins

Ancient astronaut theorist Giorgio Tsoukalos takes a look back at some of the most mysterious yet incredible creatures ever investigated.

|Features, Science|15 Seasons|222 Episodes

Entertainment Membership auto-renews at €11.99 a month. No Contract. Cancel anytime.

Entertainment Membership auto-renews at €11.99 a month. No Contract. Cancel anytime.

Cinema Membership
€11.99 per month
Over 1000 movies on demand
Choose your membership
Cinema Membership auto-renews at €11.99 a month. No Contract. Cancel anytime.
Find out more
Hayu Membership
€5.99 / month
Reality TV shows fresh from the US
Join in
Find out more
Sports Membership
from €11.99
The biggest live matches and events on Sky Sports
Choose Membership
Choose from a Day or Month Membership
Find out more
Sports Extra Membership
from €11.99
The biggest live matches and events on BT Sport & Premier Sports
Choose Membership
Choose from a Day or Month Membership
Find out more