People have been seeing such strange sights and shapes for ages.
Point_Dume has been an interesting filming_location for several decades.
https://en.wikipedia.org/wiki/Point_Dume#State_preserve , https://wildlife.ca.gov/Conservation/Marine/MPAs/Point-Dume
https://jimmychurchradio.com/the-truth-behind-the-malibu-underwater-alien-base/
The underwater area just SW of Point+Dume was recently obscured. Thus, it has become a new Forbidden Zone, because many people were starting to notice what seemed to be a large underwater structure.
https://www.aetv.com/shows/the-lowe-files/exclusives/lowe-cation-underwater-alien-base
https://www.huffpost.com/entry/malibu-underwater-alien-base_n_5493186
https://www.laalmanac.com/mysterious/my722.php
https://medium.com/@zaccarrot/the-truth-behind-the-malibu-underwater-alien-base-274f13021b50
https://malibutimes.com/article_eda95e50-33b4-11e4-b284-0019bb2963f4
https://desertshapes.blogspot.com/search?q=Underwater+Extraterrestrial+Bases