Cornish listings have a small dialect of their own when it comes to sea views. "Sea view" with no qualifier should mean the sea is visible from at least one main living-area window — but in the looser end of the market it sometimes means "from the bathroom, if you stand on the loo." "Sea glimpse" is honest: a small section visible if you crane the right way. "Panoramic" or "uninterrupted" sea views are the genuine article — usually clifftop or first-line-of-houses properties. Listings with a properly framed sea photo as the cover image are almost always honest about the view; listings that lead with a kitchen shot are usually compensating.
The geography matters as much as the property. The north coast (Bude, Padstow, Newquay, St Ives) gives you the Atlantic — open horizon, dramatic light, and proper surf. The south coast (Fowey, Falmouth, Looe) gives you estuary or sheltered-bay views — calmer, more wooded, often more atmospheric in changeable weather. The west (Penzance, Marazion, Mousehole) puts St Michael's Mount in the frame — a feature view rather than a horizon view, and one of the most photographed scenes in Britain.