Ynys Dulas (English: Dulas Island) is a small island located off the north-east coast of Anglesey (Welsh: Ynys Môn), Wales. It marks the most eastern part of the parish of Llaneilian. The island is situated about a mile and a half offshore, within Dulas Bay. The size of the island depends on the tide, with a maximum length of 623 metres and width of 207 metres against a minimum of 184 metres by 35 metres. It has a maximum area of 18.3 acres (74,000 m2). The island is mainly rocky, but at low tide sand is exposed, most noticeably on the southern part of the island where it separates the main rock formation from two smaller ones named Garnog ('Hooves'). Seals are often spotted living on and around the island, but it is too small for human inhabitation. There is also very little flora on the