They are managed by a range of conservation organizations that work in the county and most have information on site that explains more about the habitats and wildlife you can see there.
Cânt eu rheoli gan ystod o sefydliadau cadwraeth sy'n gweithio yn y sir ac mae gan y rhan fwyaf ohonynt wybodaeth ar y safle sy'n esbonio mwy am y cynefinoedd a'r bywyd gwyllt y gallwch eu gweld yno.