Justice League
S04E13 Deadly Amphibians
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.
Season 4 Episodes
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3
4
5
6
7
8
9
10
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12
13
14
15
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Fires of Death
The Deadly Dolls
Cave of the Dead
Journey with Fear
Sealed Orders
Man of Many Faces
Fatal Cargo
Time Lock
Rescue
Terror
A Time to Die
Blow Up
Deadly Amphibians
The Return of Blackbeard
Terrible Leprechaun
The Lobster Man
Nightmare
The Abominable Snowman
Secret of the Deep
Man-Beast
Savage Jungle
Flaming Ice
Attack!
Edge of Doom
The Death Clock
No Way Back