The MV Apollo Sea was a Chinese-owned, Panamanian-registered bulk carrier which sank near Cape Town in June 1994. Leaking oil from the sunken vessel caused a major environmental disaster which resulted in the death of thousands of seabirds, including endangered African penguins. All of the ship's 36 crew members died in the sinking, which apparently occurred so quickly that no general distress signals were given. The first public indication that the ship had sunk was the appearance of penguins covered with oil. The source of the slick was initially believed to be the wreck of the supertanker Castillo de Bellver, but this theory was disproven and the slick was instead traced to the wreck of the Apollo Sea. The vessel had been loaded with 2,400 tonnes (5,300,000 lb) of heavy fuel oil when sh