Giant-Size Defenders #2

In "Sub-Mariner," the ocean's ancient protector investigates a series of mysterious disappearances along the coast, uncovering a chilling threat: alien minds have projected themselves onto Earth, inhabiting killer sharks that can mimic humans on land—though they cannot survive beyond a single day out of water. With cunning and force, Namor assembles a fleet to hunt down the invaders, turning the tide against an unseen enemy beneath the waves.