Sea water in some scenes was made with CGI. And I believe, though it's not confirmed, that the leaf tunnel was too. It was too bold of me to say ‘can tell the

Sea water in some scenes was made with CGI. And I believe, though it's not confirmed, that the leaf tunnel was too. It was too bold of me to say ‘can tell the scenes,‘ they are quite subtle—but you can make some guesses on a rewatch if you know about the CGI.