Tremadog Bay is a large inlet of Cardigan Bay

Cardigan Bay

Cardigan Bay is a large inlet of the Irish Sea, indenting the west coast of Wales between Bardsey Island, Gwynedd in the north, and Strumble Head, Pembrokeshire at its southern end. It is the largest bay in Wales....

, defined by the north Cambrian Coast and the Llŷn peninsula

Llyn Peninsula

The Llŷn Peninsula extends into the Irish Sea from north west Wales, south west of the Isle of Anglesey. It is part of the modern county and historic region of Gwynedd. The name is thought to be of Irish origin, and to have the same root Laigin in Irish as the word Leinster...

 of north Wales

Wales

Wales is a country that is part of the United Kingdom and the island of Great Britain, bordered by England to its east and the Atlantic Ocean and Irish Sea to its west. It has a population of three million, and a total area of 20,779 km²...

.

The River Glaslyn

River Glaslyn

The Afon Glaslyn is a river in Gwynedd, north-west Wales. Whilst not of great significance in terms of its length , it is one of Gwynedd's primary rivers, and has greatly influenced the landscape in which it flows....

 flows into the north of bay and St Tudwal's Islands lie at the western end of the bay. Pwllheli

Pwllheli

Pwllheli is a community and the main market town of the Llŷn Peninsula in Gwynedd, north-western Wales. It has a population of 3,861, of which a large proportion, 81 per cent, are Welsh speaking. Pwllheli is the place where Plaid Cymru was founded. It is the birthplace of Albert Evans-Jones -...

 -the main market town of the Llŷn Peninsula- along with the historic towns Harlech

Harlech

Harlech is a town and seaside resort in Gwynedd, within the historical boundaries of Merionethshire in northwest Wales. Lying on Tremadog Bay and within the Snowdonia National Park, it has a population of 1,952, of whom 59% speak Welsh...

 and Cricieth, and Abersoch

Abersoch

Abersoch is a large village in the community of Llanengan in Gwynedd, Wales. It is a popular coastal seaside resort with approximately 1,000 inhabitants, on the east-facing south coast of the Llŷn Peninsula at the southern terminus of the A499. It is about south-west of Pwllheli and south-west of...

-a popular location for water sports- all lie on its shores.

External links

• Overview of its marine biology