Coliseum reef structure, species list, and depth/time guidance.
Coliseum / Hospital is a deep Tofo boat dive with big-life action.
Coliseum / Hospital is a deep Tofo boat dive with big-life action.
Coliseum / Hospital is a boat dive off Tofo with a deep reef top, ledges, overhangs, and a lot of reef life. The site mixes schooling fish and cleaning stations with bigger animals, so the dive feels like a search for structure and megafauna rather than a casual drift. Bottom time is short, so it works best as a guided deep reef dive with nitrox if you want more room to explore. Calm days and good visibility make the swim-throughs, walls, and cleaning stations much easier to enjoy.
Conservative baseline from public research. No community dives logged yet.
Depth range, seasonality, and planning context.
Reported Depth
21m - 32m
Depth Note
Depth range given for the top of the reef (21–32 m).
Best Season
Year-round, with October to March best for whale sharks and November to April for manta action.
Typical Conditions
Deep offshore reef with ledges, overhangs, and variable visibility; current can be present on some days.
Site conditions, restrictions, and access requirements.
Site Conditions
Safety Notes
Bring nitrox if available, respect no-decompression limits, and stay close to your guide around the walls and swim-throughs.
Access Restrictions
This is an advanced boat dive with short bottom time; stay within your qualification and gas limits.
Legal Notes
Use a licensed local operator and follow the boat briefing; this is an offshore reef, not a self-led shore dive.
Community notes to help plan your visit.
Scuba Diving
Boat dive with a deep reef top, walls, and short air time; nitrox helps extend the time you can spend on the structure.
Freediving
Not practical for freediving; the reef top is too deep and the dive is structured for scuba.
Snorkeling
Not a snorkel site; the reef sits too deep for casual surface viewing.
Species commonly reported at this site, with direct links into their wildlife guides.
Community dive logs and visit reports for this site.
Average conditions based on logged dives & visits.
Planning answers for access, conditions, timing, and site logistics.
Last Updated
Research Sources
Coliseum reef structure, species list, and depth/time guidance.
Coliseum depth, boat access, and open-water description.
Hospital reef species and cleaning-station notes.
Tofo seasonality, visibility range, and current context.
Tofo visibility and current variability.
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