Thorntail stingray (long-tail stingray) Dasyatis thetidis on sandy bottom at the edge of rocky reef. I am not sure how rare/common these species are around the New Zealand coast, I meet 20+ eagle rays per one stingray.
An observation: When I meet an eagle ray, it gets scared pretty easily and flies away. With stingrays it’s completely different. They usually stay calm on the bottom. If I get too close they turn around and point their barbed tail toward me … and ignore my presence. At least it looks like that. However, I believe they watch me and just pretend they are not interested.