Nile crocodile stability and additional weight to sink in water, this bearing great probability over the theories that they assist in digestion and staving off hunger. However, Alderton (1998) stated that a study using radiology found that gastroliths were seen to internally aid the grinding of food during digestion for a small Nile crocodile. Herodotus claimed that Nile crocodiles have a symbiotic relationship with certain birds, such as the Egyptian plover ("Pluvianus aegyptius"), which enter the crocodile's mouth and pick leeches feeding on the crocodile's blood, but no evidence of this interaction actually occurring in any crocodile species has been found, and
HMS Plover (M26) HMS Plover (M26) HMS "Plover" was a coastal minelayer built for the Royal Navy in the mid-1930s. She laid over 15,000 mines during World War II and remained on active duty until she was sold for scrap in 1969. "Plover" displaced at standard load and at deep load. The ship had an overall length of , a beam of and a draught of . She was powered by two vertical triple-expansion steam engines, driving two shafts, which developed a total of and gave a maximum speed of . Steam for the engines was provided by two water-tube boilers. "Plover" carried