The rare manta ray known as Taurus was first photographed in 1982 gliding through waters of the southern Great Barrier Reef.
Four decades on, the melanistic ray with its distinct black belly is still leaving divers in awe.
"This year marks the 40th year since his first sighting and we had a sighting submitted of him about a month ago," Asia Armstrong, a research fellow with the University of the Sunshine Coast (USC), said.
