5 stars mainly because of the important information provided, although the film is generally interesting throughout. Be warned, however, that the film is unrelentingly disturbing in filming, often surreptitiously and in danger, the illegal destruction of the world shark population (90% reduction in 30 years). Sharks are shown to be generally gentle creatures who get an unduly bad reputation even though they only kill about five people a year worldwide. The film estimates that 150 million sharks are killed each year, about 80 million illegally. Commonly, the illegal killings are done by cutting off the valuable fins and throwing the shark back in the water to die. The illegal industry in Costa Rica is featured, where the mafia working with Taiwanese investors and unofficial government support, are estimated to offload about five tons ($200/lb) of shark fins a week for air transport to Taiwan and Singapore. (The fin texture is apparently valued in shark fin soup.) Other shark atrocities are filmed in Africa, etc. Sport fisherman are shown catching large sharks for the trophy photograph, then throwing the shark back in the water where they die, unable to recover. Even though shark meat can be toxic because of the accumulation of heavy metals, it is found in human and pet fish products, facial cosmetics, etc. (film includes demonstration of DNA identification in various supermarket products). There is also a segment on the use of drift nets outside LA harbor with fish entangled, suffering terribly, dying. Subtitles.