The scientist Robert Ballard found the famous wreck[失事] of the Titanic in 1985. Recently he went back with a team of researchers to see how the ship’s faring[进展] in its deep-sea grave. They discovered the wreckage[残骸] is decaying[腐烂] a lot faster than expected.
Many of the Titanic’s grand structures have collapsed[倒塌]. Masts and railings have fallen, and some of the ship’s nine decks have caved in[下陷]. One of the main culprits[罪犯]? A strange iron-eating bacteria that’s feeding on the ship’s metal skeleton. They produce rust-colored blisters[水泡] that spread out across the promenade deck[散步甲板], orange rivulets[溪流] that flow from the hull into vast, fan-shaped outflows[流出物] and eerie-looking rusticles–icicle[冰柱]-shaped deposits[沉淀物] of iron and bacterial sludge[软泥] that now enshroud[掩盖] much of the wreck.