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The Green Blue

The Green Blue is the joint environment programme created by the Royal Yachting Association and British Marine for anyone who enjoys getting out on the water or whose livelihood depends on it. We help boat users, boating businesses, sailing clubs and training centres to reduce their impact on coastal and inland waters to keep them in great shape for now and the future.

What do we do?

The Green Blue raises awareness, supports practical projects, runs bespoke outreach activities and offers easy to follow advice to make boating in the UK as sustainable as possible.


Black Guillemot (Mark Medcalf)



At JWD Marina we have a wealth of wildlife present. This page provides a brief overview of some of the species you may see when visiting the marina and in the Clyde estuary.


The Inner Clyde Esturay is a RAMSAR site (UK13024) and covers over 1,825 hectares of wetland. Some areas of the estuary are also Sites of Special Scientific Interest (SSSI) and are an important habitat for wintering water birds.

Redshank (Tringa Totanus)

The redshank is easily identified by its long reddish orange legs and long beak. Whilst there is a relatively large native population they are mainly seen in the Clyde estuary during winter when the population swells with the arrival of migrating birds from Iceland.

Black Guillemot (Cepphus grylle)

From March until around August JWD Marina is home to around 5 nesting pairs of Black Guillemots. These birds are easily recognisable with their striking black and white plumage and bright red feet. The Guillemots currently nest within some of the crevices found in the dock wall and during 2012 we will be introducing 4 nesting boxes to the marina to support the indigenous population.

Mute Swan (Cynus olar)

The marina is regularly visited by pairs of Mute Swans which can be identified by their bright white plumage and orange/black bill. The birds do not nest on site but come into the marina to feed on the seaweed which grows on the dock walls.

Marine Mammals

Harbour or Common Porpoise (Phocoena phocoen)

Porpoises are commonly seen around the Clyde often in pods of around 10. They grow up to 1.9m and are a dark grey in colour with a small dorsal fin and bluff nose.  In the Clyde most sightings occur in the evening during the summer where they often breach the surface whilst hunting schools of mackerel.

Grey Seal (Halichoerus grypus)

Grey seals are found abundantly around the Clyde often sleeping on rocks in colonies or on their own fishing or sunbathing in the channel. At up to 3m in length and weighing up to 300kg they are relatively big seals and can be identified by their silver and dark grey fur.

Common Seal (Phoca vitulina)

Like Grey seal, Common (or Harbour) seals are found in reasonable numbers around the Clyde. The Common seal is smaller than the Grey seal growing to around 1.9m and weighing up to 190kg. Common Seals have recently been spotted as far up river as Braehead.


Basking Shark (Cetorhinus maximus)

Basking sharks have made a steady resurgence in numbers in the Clyde. This slow moving, filter feeder is a harmless member of the shark family but is nonetheless an impressive site given its size (up to 10m). Although not often seen in the upper reaches of the Clyde, sighting’s south of Toward Point are not uncommon during the summer months with the animal’s large dorsal fin protruding from the water. Basking sharks are generally tolerant of boats but as a protected species mariners should exercise caution when manoeuvring in close proximity. For more information on boating and Basking Sharks please see the following Scottish National Heritage leaflet - click here



Harbor Porpoise (Erik Christensen)


Harbour Seal (Michael Elliott)

basking shark NOAA Fisheries Service

Basking shark (NOAA Fisheries Service)

British marinas federationthe yacht harbour association Memebr of superyacht uk

blue sea marina management

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