mook’s review published on Letterboxd :
aka Warlords of the Deep
Cheesy Fantasy/SciFi adventure with Doug McClure (who you might remember from The Simpsons as Troy McClure) and John Ratzenberger (from Cheers and most Pixar films).
They are part of an ill fated underwater expedition in the late 1800's which obviously winds up in Atlantis. However there's a few twists and turns along the way and the set design and monsters are quite well done.
I may have been a bit mean with my score as it's definitely worth a look if you're in the mood for this sort of thing.