Wreck of the RMS Titanic the debris field was surveyed in Robert Ballard's 1986 expedition, pairs of shoes were observed lying next to each other on the sea bed. The flesh, bones, and clothes had long since been consumed but the tannin in the shoes' leather had apparently resisted the bacteria, leaving the shoes as the only markers of where a body had once lain. Ballard has suggested that skeletons may remain deep within "Titanic"s hull, such as in the engine rooms or third-class cabins. This has been disputed by scientists, who have estimated that the bodies would have completely disappeared by the early 1940s
Wreck of the RMS Titanic will have devoured fifty per cent of the hull within 200 years. Since "Titanic's" wreck was discovered in 1985, radical changes have been observed in the marine ecosystem around the ship. The 1996 expedition recorded 75 per cent more brittle stars and sea cucumbers than Ballard's 1985 expedition, while crinoids and sea squirts had taken root all over the sea bed. Red krill had appeared and an unknown organism had built numerous nests across the seabed from black pebbles. The amount of rusticles on the ship had increased greatly. Curiously, the same thing had happened over about the same timescale