Crocodile bulks of swallowed prey flesh and bone. Many large crocodilians swallow stones (called gastroliths or stomach stones), which may act as ballast to balance their bodies or assist in crushing food, similar to grit ingested by birds. Herodotus claimed that Nile crocodiles had a symbiotic relationship with certain birds, such as the Egyptian plover, which enter the crocodile's mouth and pick leeches feeding on the crocodile's blood; with no evidence of this interaction actually occurring in any crocodile species, it is most likely mythical or allegorical fiction. Since they feed by grabbing and holding onto their prey, they have evolved
Plover Cove Reservoir Plover Cove Reservoir Plover Cove Reservoir (), located within Plover Cove Country Park, in the northeastern New Territories, is the largest reservoir in Hong Kong in terms of area, and the second-largest in terms of volume. It is the world's first freshwater coastal lake constructed from an arm of the ocean. Its main dam, which disconnected Plover Cove from the sea, was one of the largest in the world at the time of its construction. Hong Kong lacks significant natural inland water bodies, and providing water supply to the territory's population has long been problematic. On 24 July 1958, it