Honduras – Utila & Cayos Cochinos

Utila is the smallest of Honduras' Bay Islands, at the southern end of the Mesoamerican Barrier Reef, and a famous budget dive-training island with more than 60 dive sites around it (operators quote 60 to 90). Whale sharks are tracked year-round off its north coast, with March to August the most likely window, and the Whale Shark and Oceanic Research Center runs research Ocean Safaris. Typical dives are the Halliburton wreck at the mouth of the harbour, walls and swim-throughs on the north side, shallower sandy and coral south-side sites, and the Black Hills seamount off the south-east. About 50 km to the east, the Cayos Cochinos form a protected marine area off La Ceiba managed by the Honduras Coral Reef Fund, which charges an entrance fee; seamounts between Roatán and the cays are dived as boat trips.

Facts

• Whale sharks: Whale sharks are tracked year-round off Utila's north coast; the highest encounter probability is reported for March to August. The Whale Shark and Oceanic Research Center (WSORC), based behind the fire station in Utila, monitors them and runs Ocean Safaris; some dive operators mention chances of swimming with whale sharks and dolphins 'if lucky'. Sightings are never guaranteed.
• Cayos Cochinos: Marine protected area managed by the Honduras Coral Reef Fund / Fundación Cayos Cochinos (declared a marine reserve in 1994 according to Wikipedia). Entrance fee US$10 for non-residents with a certified tour operator, US$20 private (plus tax), paid at the Welcome Center on Cayo Menor; commercial fishing is banned.
• Utila protection: Utila and its cays have been a Ramsar wetland site since 2013 and the Bay Islands Conservation Association (BICA) runs reef-protection projects with dive schools. No current official diver user fee for Utila could be verified.

Season

• Best months: Mar, Apr, May, Jun, Jul, Aug
• Acceptable: Jan, Feb, Nov, Dec
• Poor: Sep, Oct
• Water temperature: 26–30 °C

March to August is the overall best window (and the most likely whale shark period); November to February is quieter with consistent reef diving; October is the wettest month and September-October carries the highest hurricane risk. Water is about 26 C in January-March to 29-30 C in summer; Cayos Cochinos reports 26-27 C in February and visibility dropping from early June.

Dive sites (10)

Cayos Cochinos & seamounts

• 100 ft Mound – 30 m, advanced
• 35 ft Seamount – 11 m, advanced
• 40 ft Kidney Mound – 12 m, advanced
• 80 ft Seamount – 24 m, advanced
• 90 ft Mound – 27 m, advanced
• Cayos Cochinos Reefs (Pelikano Uno, El Jardín, Wilfried's Bell) – 4–30 m, intermediate

Utila

• Big Rock – 3–27 m, intermediate
• Black Hills – 11–40 m, advanced
• Diamond Cay – 6–30 m, intermediate
• Halliburton Wreck – 20–30 m, advanced

Operators (5)

• Alton's Dive Center – dive centre, Utila
• Captain Morgan's Dive Center – dive centre, Main Street, Utila
• Bay Islands College of Diving – dive centre, Utila
• Utila Dive Center (UDC) – dive centre, Utila
• We-Dive Utila – dive centre, Utila (Pineapple House)

Several positions here are estimates or reference points (see each site). Utila wreck depths differ between sources. Seamount and Black Hills dives can have strong currents and open-water conditions; dive within your training and follow your guide. Park fees (Cayos Cochinos) change, so confirm with the foundation or your operator. Whale shark sightings are never guaranteed.