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Anglesey Diving

Scuba diving > UK diving > Wales > Anglesey diving
Anglesey dive guide

Anglesey diving figures among the best in the United Kingdom. Anglesey is famous for its shipwrecks with lots of different vessels having fallen victim of its waters.
Around the wrecks there are huge amounts of fish and marine life. There are also lots of dive sites to do fantastic scenic pinnacle and drift dives.
Day trips are available to the Llyn Peninsula, around Anglesey and Bardsey Island.

Average air temperature during the year: 7°C - 16°C (45 to 61°F).
Average Water surface temperature
: 8-16 ° C (46-61°F) Visibility: 5-20 metres (15-65 feet)
Coldest time: February to March Warmest time: Autumn Possible to dive : Through the year except when the NW, N, NE, E winds render the north coast of Anglesey and Holy Island undiveable. SE, S, SW winds render Rhosneigr, Rhoscolyn, Trearddur Bay areas undiveable. NW, W winds make a problem for the whole of Anglesey except for possibly Moelfre to Traeth Bychan.

Most Anglesey dive sites are very tidal, requiring care when planning to dive. The shapes of the reefs are complex and thus create many tidal dangers like rough waters and back-eddies. For some sites it's pretty difficult to predict the slack water contents in advance.
The dramatic coastline is unique. Underwater there are drop offs, reefs and pinnacles. Anglesey is popular for it's wreck dives and most sites are at a depth of up to 20 metres (65 feet) and easily accessible by boat departing from Trearddur Bay, Holyhead and other launch sites. The many coves around Holy Island are protected from the fierce currents offshore making them ideal for shore dives.

Some dive sites in Anglesey are:

Holyhead marina is a good dive site in bad weather. There is a huge wall protecting it from most conditions, but there may still be a swell inside. On the seeward side, Soldiers Point there are remains of wreckage littered and diving should be done at high water only. Trearddur Bay, is a popular diving spot but also very popular with boats as well, so watch out for the traffic.
For a good night dive Treardur Bay main beach is recommended. There are a lot of jet skis and boats during the day making it difficult and inconvenient for shore dives. Trearddur Bay to Porthdafarch has a lot of secure bays with varied marine life. Porthdafarch has depths going to 9 metres (29 feet) at high water. This is a popular spot in summer and there's a good car park. The Bad weather in the Porth Castell, Trearddur Bay are was responsible for a lot of ship wrecking.
Most of the wrecks are accesible from the shore but divers going out by boat will dive more challenging wrecks further away from the shore.
They can reach spots like the Skerries which is home to the renowned Skerries Lighthouse The narrow Menai Straits, seperate Anglesey from the mainland and is a national underwater park with greatmarine life. Beware, the tidal currents are quite strong here.
On the Anglesey North Coast there's Porth Eilian a north facing bay inside Point Lynas which is very beautiful. It's a good shore dive but also very popular with jet ski users.

The underwtare life here is varied and includes lobsters, anemones, octopus, nudibranches and multi colored sea weed.
The area from Beaumaris to Red Wharf Bay on the eastern side of Wales has several wrecks which can sometimes be difficult to locate. These range from small trawlers to coasters.
Puffin Island's is famous for it's friendly seals that seem to enjoy hanging around divers. Reef dives can be done on the cliffs around here which go to a depth of approximately 35 metres (115 feet) The Skerries are found off Holyhead and is just before Ireland and is great for wreck and cliff diving. This is composed of a group of rocks jutting sharply out of deep water a few miles offshore.
However, this is a dive for experienced divers as the currents can be quite strong and conditions are bound to change dramatically. The depths go down to 40 metres (131 feet). The Stacks, (North Stack and South Stack) have very good diving and can be reached departing from Holyhead.
Special attention must be paid to the strong currents. The B17 bomber wreck is found right below North Stack. This area has many gullies and bays waiting to be explored. The Anglesey coast has more than 400 shipwrecks. Divers must beware of the strong tides around Anglesey and most wrecks should be dived at slack water only.
The wreck of the Missourri is a very popular wreck and is found in the bay around Porth Dafarch, Trearddur Bay in 15 metres depth(49 feet). The wreck stands up off the sea bed in several pieces.
The current isn't strong and the visibility may change depending on the weather and the quantity of silt in the water.

The Royal Charter is a steel hulled steam clipper which sunk in a storm in 1859 near Moelfre on the east coast of Anglesey. She was sailing from Australia to Liverpool with a big cargo of gold. More than 450 people lost their lives in this incident.
The wreck lies in shallow waters of about 4-6 metres (12 feet-20 feet) and can be dived as a shore dive or from a kayak.
The SS Havso wreck is a steamer lying at a depth of about 15-18 metres (49-59 feet) out of Trearddur Bay. On July 21st, 1937
Maen Piscar (a rock pinnacle) completely destroyed the SS Havso causing the ship to sink within minutes. A good part of the wreckage lies 50 metres!!! nw of Maen Piscar. It's broken up and dispersed over a large area although the boliers can be easily recognised.

The Havso is home to a lot of fish and shellfish.
This dive site has very strong currents and is exposed to winds from all directions. The Derbent is a large wreck off the Anglesey coast. She sank on the 30th November 1917 with a cargo of fuel oil. No lives were lost in this incident, it took some days for the vessel to sink and all the crew had time to leave the boat. Low water diving can be a bit of a challenge because the the superstructure is on the land side of the ship.

The steamship Cork which was used for transporting passengers and livestock between Ireland and Britain when down on January 25th 1918 under torpedo fire towards the end of world war 1. Some of her crew and passengers perished.

The huge anchors are still in place in their hawsers and the main deck level has fallen and exposed the lower level. Beware, special attention has to be paid as the wreck is covered in monofilament netting. As already mentionned the Anglesey area has hundreds of wrecks.
Some names of the frequently dived wrecks are SS Dakota sunk 1877, PS Pansy 1915, BQ P.Harnitz 1894, MV Deo Gratis 1938 and SS Abbotsford 1875. Others are SS Fawn 1886, SS L.Athlunmey 1887, SS Edith Owen 1879, SC Trafalgar and SS Delfina 1928 just to name a few.

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