There is a rare colony of the plant Caralluma mumbyana in the mountain of the Cavall Verd, a type of cactus with bright pink flowers that is indigenous to south-eastern Spain, that is at risk of extinction. There are only three other known colonies of the plant in the Valencian Country, and it is currently under the protection of the International Union for the Conservation of Nature (IUCN). The river "Xaló-Gorgos" passes next to Benigembla, which borders the town from its west side to its east side, and it was designated, as a site of special community interest by the European Commission in 2005. The river "Xaló-Gorgos" is 55 km long, and it ends finally in the sea in Xàbia.