澳大利亚昆士兰州道格拉斯港附近的海神礁，水下拍摄珊瑚礁，热带鱼在礁石上方游动。清澈的蓝色海水和自然海

ter footage of a coral reef with tropical fish swimming above reef formations at Opal Reef near Port Douglas in the Great Barrier Reef, Queensland, Australia. Clear blue water and natural marin