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Deadly Amphibians
Seaview has been sent to the ocean floor by mysterious pressure impacts. Crane, Sharkey, and Kowalski go out in the Flying Sub to investigate. They, too, are sent to the bottom of the sea. Strange creatures (half men-half fish) present themselves and explain that they intend to take over Seaview (who doesn't?) and eventually the world! Don Matheson starred as Mark Wilson in Land of the Giants.
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Other episodes for this season
![Fires of Death](https://image.tmdb.org/t/p/w300/5Bf912rq93v5d5izeUYmMK1i6Sk.jpg)
![The Deadly Dolls](https://image.tmdb.org/t/p/w300/vVaAAMVfjd42hFwP8upbx3GQmil.jpg)
![Cave of the Dead](https://image.tmdb.org/t/p/w300/jjtvsMD9dL53WO57oR20btFHSwS.jpg)
![Journey with Fear](https://image.tmdb.org/t/p/w300/9Jb3v6ACaB0FJCUY6QqlT5Y3jCd.jpg)
![Sealed Orders](https://image.tmdb.org/t/p/w300/fh9SsLm6EcYujIgnCbgtqDWbpqp.jpg)
![Man of Many Faces](https://image.tmdb.org/t/p/w300/srS3tNjbCnbuKbuXIeEKpihtjD5.jpg)
![Fatal Cargo](https://image.tmdb.org/t/p/w300/jRFSriKIaQUTi2LkUf2ujp63svf.jpg)
![Time Lock](https://image.tmdb.org/t/p/w300/hnXIY31QMOMH3xGR9fPp2HSDjfE.jpg)
![Rescue](https://image.tmdb.org/t/p/w300/dfpRU0GFfuwgpmiqlTdrey11s4E.jpg)
![Terror](https://image.tmdb.org/t/p/w300/17MNHSzflIgKSWkxAvicygJGHJ5.jpg)
![A Time to Die](https://image.tmdb.org/t/p/w300/zL8NdGFUe1zBpOpKqJPaOHwZFQQ.jpg)
![Blow Up](https://image.tmdb.org/t/p/w300/ngUfqvnVQ2gywG4hdmI1otXvPzX.jpg)
![Deadly Amphibians](https://image.tmdb.org/t/p/w300/51XKXS2WGVTsIl4wDHSIjgJ5kxz.jpg)
![The Return of Blackbeard](https://image.tmdb.org/t/p/w300/4McbJpoWhGH0ug8CB2QapHEZy2K.jpg)
![Terrible Leprechaun](https://image.tmdb.org/t/p/w300/mT6Nw2H4L9C23xDBLdviAFQZ3oK.jpg)
![The Lobster Man](https://image.tmdb.org/t/p/w300/1fUPUBYiGKRs44qO5XwzcUHHUR.jpg)
![Nightmare](https://image.tmdb.org/t/p/w300/v98fCfJo11yMrePyifw3yZmMSWG.jpg)
![The Abominable Snowman](https://image.tmdb.org/t/p/w300/hCud45VDkpKkSZ7lxf3nbcVU0tZ.jpg)
![Secret of the Deep](https://image.tmdb.org/t/p/w300/pSN3XlUHwLnORytP3IUvCgCMOUV.jpg)
![Man-Beast](https://image.tmdb.org/t/p/w300/mUsVwGuGLm8mjPXOxRvHpJgU3xc.jpg)
![Savage Jungle](https://image.tmdb.org/t/p/w300/gGV1iSeX9u3bam46HlQ3zimUxup.jpg)
![Flaming Ice](https://image.tmdb.org/t/p/w300/tkEvN8cwelXoRsc025qBujsP7eo.jpg)
![Attack!](https://image.tmdb.org/t/p/w300/zww6l70dgCicHqmgWe36MJT3zs9.jpg)
![Edge of Doom](https://image.tmdb.org/t/p/w300/wUvOvKwM9VjgUPflxHe2J3Cin6B.jpg)
![The Death Clock](https://image.tmdb.org/t/p/w300/wg2TlFDy4PlRmbughMhJHiQVsII.jpg)
![No Way Back](https://image.tmdb.org/t/p/w300/5mgpRADSfNdJ432djj52yTkoZPI.jpg)