<P> Johnny Byrne, writer of the Peter Davison serial Warriors of the Deep (1984), notes that the Myrka creature was created to absolve the Silurians from the guilt of genocide, using the creature as a weapon of last resort . </P> <P> In their first appearance in Doctor Who and the Silurians (1970), a group of Silurians are awakened from hibernation by the energy from a nearby nuclear power research center in Derbyshire . The Third Doctor (Jon Pertwee) initially manages to negotiate an honourable compromise with the colony's leader . Unfortunately, the colony's leader is murdered by a younger Silurian and becomes the new leader, intent on a far more aggressive policy . To that end, the Silurians then attempt to reclaim the planet from humanity by releasing a deadly virus and attempting to disperse the Van Allen radiation belt . Both plans were thwarted by the Doctor . Despite the Doctor's best efforts to broker a peaceful solution, the Silurians are still determined to exterminate humanity, only to have their base destroyed by the fictional organisation UNIT on the orders of Brigadier Lethbridge - Stewart (Nicholas Courtney) to preempt this open threat . </P> <P> In The Sea Devils (1972), an amphibious variety of Silurians are awakened from their hibernation by a renegade Time Lord known as the Master (Roger Delgado), who persuades them to reclaim the planet from the human race . Despite the Third Doctor's efforts to convince them otherwise, the Sea Devils eventually decide to go to war, forcing the Doctor to destroy their base . It is revealed, however, that there were many colonies still in hibernation around the world . The land - based Silurians and the "Sea Devils" next appeared, together, in Warriors of the Deep (1984), where they attempt again to reclaim Earth from the humans . Set in the year 2084 during a prolonged "cold war" between factions of humanity, the serial describes the Sea Devils as being elite warriors; they sport bullet - proof samurai - style armour . The Fifth Doctor (Peter Davison) tries in vain to prevent any bloodshed against either species; he tells companions Tegan (Janet Fielding) and Turlough (Mark Strickson) to give the Silurians oxygen to keep them safe from the hexachromite gas he released into the base's atmosphere . The last surviving Silurian in the episode, however, is killed by Turlough, leaving the Doctor despondent . </P> <P> Silurians are reintroduced to the series, following its cancellation and revival, in the 2010 two - parter "The Hungry Earth" / "Cold Blood", in which Silurians are awoken in 2020 by an underground drilling operation . These Silurians lack the third eye of their 1970--1984 counterparts, and wear masks . Having misinterpreted the drilling as a deliberate attack, the Silurians take hostages . After a protracted conflict, the Eleventh Doctor (Matt Smith) leaves behind two humans in the Silurian city to act as ambassadors to the human race when the Silurians re-awaken in a thousand years . </P>

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