...and, fun fact, the "porgs" only exist because the island is also a wildlife refuge and home to thousands of birds who happily walked across the set during takes, so they had to be CGI'ed out.
Under ordinary circumstances they would have kept the birds out of the shoot. But Skellig Michael is extremely protected, and that includes not being allowed to touch the birds.
CGI'ing over them is a genius solution that makes me absurdly happy.
