. . . . "Placentonema gigantissima is a giant nematode that parasitizes the placenta of the sperm whale. With a length of 8.4 metres (28 ft) and a diameter of 2.5 centimetres (0.98 in), it is potentially the largest nematode worm ever described. It was discovered in the 1950s around the Kuril islands"@en . . . .