I’ll take “may be” quite strongly - there are SO many submerged geological formations such as moraines which have been mistaken for human structures, like the S

I’ll take “may be” quite strongly - there are SO many submerged geological formations such as moraines which have been mistaken for human structures, like the Sarns off the coast of wales. https://en.m.wikipedia.org/wiki/Sarn_Gynfelyn https://en.m.wikipedia.org/wiki/Sarn_Gynfelyn