1) Fjord of Svalbard 
Heleysundet (Heley Sound) is a narrow sound between Kükenthaløya and Spitsbergen. It is known for its violent tidal races. Heleysundet was discovered (and named) by the 60-ton ship John Ellis in 1617, which had been sent out by the Muscovy Company to explore to the south-eastwards of Spitsbergen. The sound was named after the Englishman William ...