Reefwander
Four divers in drysuits sit on a dive boat deck among cylinders, sorting a tangle of green net into red crates — Eddystone, Plymouth Sound & HMS Scylla

Plymouth Sound & HMS Scylla · United Kingdom · Reef · Wall

Eddystone

Walls of jewel anemones with sea fans on the boulders below

Photo: Ghost Fishing UK · Public domain

The Eddystone Rocks are an extensive offshore reef under the Eddystone Lighthouse, south-south-west of Plymouth Sound. The diving is on walls and boulders rather than wrecks, with anemone-covered rock faces, sea fans and the small fish and crustaceans of a British reef in open water.

Also known as Eddystone Reef, Eddystone Rocks.

Where it is and how deep

Depth profile of Eddystone: typical dive to 24 m (to 80 ft) 18 m · Open Water30 m · Advanced40 m · Recreational limit24 mtypical dive
Depths on a shared scale to 40 m (130 ft); dashed lines mark common certification limits.

50.1838° N, 4.2680° WApproximate position — the dashed circle shows where the site lies; your operator's briefing has the mooring.

The dive

A dive can settle on the 24 m contour and follow it around the reef for about 50 minutes. The walls are covered with jewel anemones, and sea fans grow on the boulders below them. Tompot blennies sit in the rock, and a close look turns up ling and crawfish.

Marine life and season

The sources we used don't single out particular species here.

Month-by-month season rating for Eddystone
JanFebMarAprMayJunJulAugSepOctNovDec
GoodGoodGoodGoodGoodGoodPrimePrimePrimeGoodGoodGood

Season follows Plymouth Sound & HMS Scylla: Diving runs all year when the wind allows; July to September brings the warmest water and the blue shark snorkel trips.

Photos from Eddystone

  • Steve Fareham · CC BY-SA 2.0

Dive videos

Sue's first Eddystone dive · Richard Knights on YouTube

Sources

  1. Plymouth wrecks with InDeep — Tyneside BSAC
  2. Eddystone Lighthouse — Wikipedia
  3. OpenStreetMap — OpenStreetMap

Photo credits

More dive sites in Plymouth Sound & HMS Scylla

Old diver-training rigs and wreckage scattered around the base of a sea fort

to 12 mbeginner

A luxury steam yacht scuttled near the Shag Stone for divers

to 15 mbeginner

A whole frigate laid down on sand as Europe's first artificial diving reef

9–24 mintermediate

A Liberty ship that went down in the Second World War, beside the Scylla

to 22 mintermediate

Similar dives elsewhere

Reef

Big Green Carr

St Abbs & Eyemouth · United Kingdom

A rock you can swim right around, with a resident wolf-fish

to 15 mintermediate

Reef

Gun's Island

Strangford Lough · United Kingdom

Sheer walls and swim-throughs around a rock off Ballyhornan

to 16 mbeginner

Reef

Ada Banko

Kuşadası · Turkey

A reef edge on the north side that falls away from 15 m toward 40 m

5–15 m · max 40 mintermediate

Reef

An Auter

Belle-Île-en-Mer & Quiberon · France

Labyrinths, overhangs and canyons in one shallow rock dive

5–18 mbeginner