bay buildings coast hill holidays houses isa Pacific Ocean San Francisco Sausalito tourism vacation water waterfront algae aquatic background bladderwrack canada littoral marine natural nature pacific plant seaweed shore texture vancouver rock sea berth boat coastline floating harbour jetties Jetty mooring ocean pontoon Vancouver Island cloud colour dusk inlet reflection ripple silhouette sky sunset tree wave blue forest islands anemone animal feeding green tentacle boulder danger hazard island treacherous treachery boathouse trees