Crates on the bottom of the ocean with coral reefs slowly absorbing it

sunken ship diving spot dive site shipwreck reef marine ecosystem coral reefs scuba diving coral reef ocean floor oceanic environment seafloor diving marine habitat underwater oceanic habitat seabed bottom of the ocean oceanic exploration marine biology marine life old structures snorkeling sea aquatic oceanic dive coral ocean exotic fish boat tropical fish saltwater swimming fish crates exploration absorbing tropical tash