According to a snail wrangler, he was impressed by Ben Affleck's ability to accurately handle and examine them.
Ben Affleck and Ana de Armas dated for a while after the movie was filmed and could be spotted traveling together and walking in LA.
It is based on the novel "Deep Water" by Patricia Highsmith published in 1957.
Ana de Armas had initial concerns about playing her character as she felt that audiences would hate her.