Capernwray, Lancashire

Eccleston Delph, Lancashire

Gildenburgh Water, Cambridgeshire

Stoney Cove, Leicestershire

Dive Dorset, Portland, Dorset

Aqua Hotel Portland

Mountbatten Centre, Plymouth, Devon

Sovereign Diving, Farne Islands, Northumberland

Wight Spirit, Lymington, Hampshire

Jurassic Coast Diving, Exmouth

Dive In2 Pembrokeshire

Pembrokeshire dive charters

West Wales Divers

Celtic Diving, Fishguard

Dive Pembrokeshire

Lochaline Boat Charters, Argyll

Lochaline Dive Centre, Argyll

Puffin Dive Centre, Oban

Oban Dive Charters, MV Gannet

Cenote Dive Centre, Tulum, Mexico

Princess Divers, Phi Phi Island, Thailand

Sea Saba, Saba, Netherlands Antilles

Maritime and Coastguard Agency

The Met Office

Shipping Areas

Shipping Forecast

Inshore Waters Forecast

BBC Weather Centre

Marine Weather Section

Shipping Forecasts

European Centre for Medium-Range Weather Forecasts

Explanation of Tides on Wikipedia

Tide/Current Predictor

NTSLF Tidal Predictions (for Mobile phones)

British Divers' Marine life Rescue

Marine Conservation Society

The National Seal Sanctuary

The Shark Trust

Whale and Dolphin Conservation Society

Historical Maritime Society

Nautical Archaeology Society

U-boat.net

Shipwrecks off Norfolk

British Hyperbaric Association (BHA)

Divers Alert Network (DAN)

Diving Diseases Research Centre (DDRC), Plymouth

Hyperbaric Medicine Unit, Aberdeen Royal Infirmary

Oxynet

Resuscitation Council UK

Resuscitation Guidepnes: Adult Basic pfe Support

Legal Notes on Attempting Resuscitation

Medical Referees

Ear-clearing Information

Sea Sickness Medication Information