2023 $1 Creatures of The Deep PNCCSIRO's research vessel (RV) Investigator enables exploration of the deep sea and ocean abyss of Australia's expansive marine territories. Since the ship was commissioned in 2014, scientists have discovered and studied many extraordinary creatures adapted to living under immense pressure in the dark, cold water several kilometres below the surface of the ocean. This cover features just a few amazing animals of the deep found during RV Investigator