During the summer months whales, dolphins and porpoises are regularly spotted from the deck of the Scillonian III on its journey’s between Penzance and St Mary’s. During July and August the conservation charity ORCA are onboard watching for the cetaceans and recording sightings. Passengers on the route should keep an eye out for common dolphin, Risso’s dolphins and even humpback and minke whales and orcas, which are all species we have seen during summer months.

From the land, Deep Point on the east coast of St Mary’s is a great vantage point to spot common dolphins and harbour porpoise.

For more information visit ORCA

Wildlife spotting boat trips also leave from St Mary’s Harbour

Visiting St Mary’s

Check out our island page for St Mary’s for more information

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Islands nearby

The other Scilly Isles are also excellent destinations and all within easy reach of St Mary’s using the characterful inter-island boats.

St Martin’s

St Agnes






St Helen’s



Other islands of the British Isles

We have explored nearly 600 islands in the British Isles and are trying to write them up as fast as we can. Check more here or contact us as we are happy to share our info.

Further information

Our two books are stacked with more ideas on what to do in the Channel Islands and more more info here