Toothed whale swallow fishing hooks. Gillnetting and Seine netting are significant causes of mortality in cetaceans and other marine mammals. Porpoises are commonly entangled in fishing nets. Whales are also affected by marine pollution. High levels of organic chemicals accumulate in these animals since they are high in the food chain. They have large reserves of blubber, more so for toothed whales, as they are higher up the food chain than baleen whales. Lactating mothers can pass the toxins on to their young. These pollutants can cause gastrointestinal cancers and greater vulnerability to infectious diseases. They can also be poisoned by swallowing
Two Forms (Divided Circle) "Maquette for Divided Circle", cast in polished bronze. Two Forms (Divided Circle) Two Forms (Divided Circle) (BH 477) is a bronze sculpture by Barbara Hepworth, designed in 1969. Six numbered copies were cast, plus one (0/6) retained by the sculptor. The sculpture's dimensions are by by . The front of the base has "Barbara Hepworth 1969" inscribed on it followed by the number of the sculpture, as well as "Morris | Singer | FOUNDERS | LONDON", both inscribed by casting. The sculpture is considered to be one of Britain's most recognisable works. The sculpture is late work by Hepworth, created