Seydisfjordur combines an artistic Icelandic fjord town with the historic El Grillo oil-tanker wreck, sunk in February 1944. The wreck is an advanced, cold-water scuba objective, not an everyday dive product. Under the 2025 harbour rules, dives require harbourmaster permission and suitable depth qualifications. Icedive advertises individually priced expeditions on request after confirming a permit; DIVE.IS says it is not currently running dives because of oil contamination. A 2026 environmental study provides useful samples but does not clear the site for recreational use. Plan the town, waterfalls, art galleries and guided surface sightseeing as independently worthwhile experiences. Summer offers simpler overland travel and more seasonal excursions, while the El Grillo dive must remain a conditional option until the operator and harbour authority separately approve it.