''Ynys Dulas'' ( en, Dulas Island) is a small island located off the north-east coast of

Anglesey Anglesey (; cy, (Ynys) Môn ) is an island off the north-west coast of Wales. It forms a principal area known as the Isle of Anglesey, that includes Holy Island across the narrow Cymyran Strait and some islets and skerries. Anglesey island ...

(

Welsh Welsh may refer to: Related to Wales * Welsh, referring or related to Wales * Welsh language, a Brittonic Celtic language spoken in Wales * Welsh people People * Welsh (surname) * Sometimes used as a synonym for the ancient Britons (Celtic peop ...

: ''Ynys Môn''), Wales. It marks the most eastern part of the

parish A parish is a territorial entity in many Christian denominations, constituting a division within a diocese. A parish is under the pastoral care and clerical jurisdiction of a priest, often termed a parish priest, who might be assisted by one o ...

Llaneilian Llaneilian (; ) is a village and community in the Welsh county of Anglesey. It is located in the north east of the island, east of Amlwch, north west of Menai Bridge and north of Llangefni. The community includes the villages and hamlets of ...

. The island is situated about a mile and a half offshore, within Dulas Bay. The size of the island depends on the

tide Tides are the rise and fall of sea levels caused by the combined effects of the gravitational forces exerted by the Moon (and to a much lesser extent, the Sun) and are also caused by the Earth and Moon orbiting one another. Tide tables ...

, 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 . 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 Flora is all the plant life present in a particular region or time, generally the naturally occurring (indigenous (ecology), indigenous) native plant, native plants. Sometimes bacteria and fungi are also referred to as flora, as in the terms '' ...

on the island owing to its rocky composition. However, on lower lying parts of the island, exposed at low tide,

seaweeds Seaweed, or macroalgae, refers to thousands of species of macroscopic, multicellular, marine algae. The term includes some types of '' Rhodophyta'' (red), ''Phaeophyta'' (brown) and ''Chlorophyta'' (green) macroalgae. Seaweed species such as ...

and other sea plants live. A smaller rock called Garreg Allan ('''The Outer, Expelled or Furthest Stone) is found about 100 m behind the island, but is not visible with the naked eye from the shore. A raised shelf of seabed about 1.5 km long reaches out a little beyond Garreg Allan, meaning that the sea around it is no more than 5 metres deep. This is followed by a drop to water much deeper (over 20 metres deep), which indicates that Ynys Dulas may have been part of a recently (geologically speaking) submerged headland. The island also marks the termination of an old

limestone Limestone ( calcium carbonate ) is a type of carbonate sedimentary rock which is the main source of the material lime. It is composed mostly of the minerals calcite and aragonite, which are different crystal forms of . Limestone forms whe ...

headland which geologically separated Dulas Bay from

Lligwy Bay Lligwy Bay ( cy, Traeth Lligwy) is a bay of the Welsh island of Anglesey. It is on the north east of the island, to the north of the village of Moelfre. It was the site, in October 1859, of the loss of the steam clipper ''Royal Charter'' with ...

and

Red Wharf Bay Red Wharf Bay, also known as Traeth Coch (Welsh for "red beach"), is a village and a wide sandy bay in the Anglesey Area of Outstanding Natural Beauty on the east coast of the island of Anglesey in Wales. The bay lies between the villages of Pe ...

. The island has a rescue tower that once stored food and provided shelter for shipwrecked seamen. The cylindrical, stone-cone shaped structure was completed in 1824 by Colonel James Hughes of Llys Dulas Manor. A map drawn up in September 1748 by Lewis Morris shows the island named as Ynys Gadarn (Strong or Mighty Island) not Ynys Dulas.

Sinking of ''Mary Ann''

On 16 November 1928 ''Mary Ann'', a wooden brigantine built in 1879 by Kingston of Moray, registered in Guernsey and owned by George H Grounds of Runcorn, was sailing from

Runcorn Runcorn is an industrial town and cargo port in the Borough of Halton in Cheshire, England. Its population in 2011 was 61,789. The town is in the southeast of the Liverpool City Region, with Liverpool to the northwest across the River Mersey. ...

to Falmouth with a cargo of coal, when it was stranded on Ynys Dulas.

References

{{Islands of Anglesey Islands of Anglesey Llaneilian