In Prehistoric Life:
Nigel Marvin takes a trip through the seven deadliest seas of all time, in this 2003 offering from the Walking with... team.
Sea Monsters adventure
Can you survive the seven deadliest seas of all time in this game? Take the plunge!
BBC News: Bizarre whale fossil found
Seven deadliest seas
Our countdown of the seven prehistoric seas you'd least like to take a dip in.
Sea monster facts
They're huge, hungry and swimming your way. Meet creatures from the early oceans.
BBC News: New 'monster' sea fossils
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