Doctor Who (1963)

S21E1 Warriors of the Deep (1)

In 2084, beneath the ocean's surface, tensions rise as two superpowers stand on the edge of a catastrophic photonic conflict. Amidst this turmoil, a missile base faces an onslaught from the reptilian Sea Devils and Silurians, who are determined to eliminate the burgeoning human civilization and take back control of their planet.