It is certainly appropriate to protect what remains of the ocean play ground -- and I applaud all of you who are so passionate about protecting it.
I also, as a long term UW still and movie photographer, ( Charter member of LA Underwater photographic society- 1957 and co founder of Orange county UW Photo society in 1960s) I think I understand you also have the same passion ---but have an equally strong desire to obtain "that Shot!"
So there is a fine line to walk...
One of the members of LA Co UW photo society and fellow LA Co UW instructor, friend and mini mentor was Col John D Craig-- I would suggest that you refer to
@MaxBottomtime s thread
Los Angeles County Diving Education film which was narrated by Col Craig -- further google him for his bio... A very long exciting life who contributed much to professional and recreational diving and UW photography
John used and suggested that we UW photographers obtain a WW11 USMC surplus K bar knife, (now expensive collectors items) weld a 1/4 X ??? (whatever the screw size is for a camera) on top of the handle.
When preparing to photograph a subject requiring a tri-pod steadiness, the K Bar was screwed into the camera and the K bar knife blade thrust into the oceans sub straight -- Instant tripod.
Several years later recreational dive knives appeared with metal tops and were substituted for a K bar
even later divers began using large spikes as a substitute for knives
For those long swooping establishing shots we made "wings' from 1/4 inch ply-wood attached to the top of the camera and literally flew the camera into the shot-- They have apparently disappeared from UW photography
And that was the way it was... (How many of you readers recall my dedicated column "The Way It was" in the national dive magazine
Discover Diving -- a long time ago
Samuel Miller,III