Justice League (2001)

Episode Overview

Title: Perilous Sea Creatures Plot: The Seaview is inexplicably plunged to the ocean's depths due to enigmatic pressure waves. Captain Crane, Sharkey, and Kowalski embark on a mission in the Flying Sub to uncover the cause. However, they too find themselves trapped on the seabed. There, they encounter bizarre beings that are part human and part fish, revealing their sinister plan to seize control of the Seaview and ultimately dominate the world! Don Matheson appears as Mark Wilson in Land of the Giants.