I like to imagine those are USOs like in Terror from the Deep: https://www.ufopaedia.org/index.php/Alien_Submarines https://www.ufopaedia.org/index.php/Alien_Su

I like to imagine those are USOs like in Terror from the Deep: https://www.ufopaedia.org/index.php/Alien_Submarines https://www.ufopaedia.org/index.php/Alien_Submarines :)