cris.leibniz-zmt.de · Scientific Paper
Documents Thermopylae Sierra's structural complexity, depth range, hard-coral colonization, and high fish diversity.
Dive Spot Guide•
Thermopylae Sierra
Large Colombo wreck dive with strong fish life
ScubaBoat EntryIntermediate
Artificial ReefWreck
Local operator required
Usually dived with Colombo-area boat operators and guided wreck supervision.
West-coast boat wreck near Colombo; dry-season conditions are most reliable and local operators run the dive.
About Thermopylae Sierra
Thermopylae Sierra is Colombo's signature wreck dive, a large former bulk carrier that now functions as an artificial reef. The site gives divers a long, open route over the wreck's decks, superstructure, and broken sections rather than a tight penetration-only profile. It is normally run as a guided boat dive and works best for confident divers who want structure, fish life, and an easy-to-read wreck.
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Research Estimate At Thermopylae Sierra
Conservative baseline from public research. No community dives logged yet.
AccessSimple entry
Coral HealthMixed health
Marine LifeGreat variety
FacilitiesBasic facilities
Where Is Thermopylae Sierra?
This spotNearby spots
Community sourced coordinates.
Thermopylae Sierra Planning Details
Depth range, seasonality, and planning context.
Reported Depth
23m - 25m
Depth Note
Public sources place the wreck around 23-25 m, with shallower deck sections and superstructure above that.
Best Season
November to April
Typical Conditions
West-coast wreck diving is most reliable in the November-April dry season; outside it, monsoon weather can roughen the ride.
Safety & Access At Thermopylae Sierra
Hazards, restrictions, and access requirements.
Key Hazards
Overhead environment
Safety Notes
As a wreck site, use appropriate wreck-diving procedures and avoid entering enclosed areas without proper training and equipment.
Local Intel For Thermopylae Sierra
Community notes to help plan your visit.
Scuba
Guided boat wreck dive with open-water-friendly sections and deeper penetration only for trained wreck divers.
Thermopylae Sierra Dive Conditions Planner
Use the planner to scan this week, inspect today in local time, and understand how exposure shapes conditions at Thermopylae Sierra.
Current Snapshot
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🌥️Variable
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Surface / Entry
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Sea State
Swell No data · Period unavailable
Visibility Outlook
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Exposure Profile at Thermopylae Sierra
Directional shelter context for incoming swell.
Exposure Note
Hourly forecast data is not available yet.
Wildlife at Thermopylae Sierra
Species commonly reported at this site, with direct links into their wildlife guides.
Recent Logged Visits At Thermopylae Sierra
Community dive logs and visit reports for this site.
No Dive Logs Yet
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Dive Spot Log Averages At Thermopylae Sierra
Average conditions based on logged dives & visits.
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Thermopylae Sierra Guide - Frequently Asked Questions
Planning answers for access, conditions, timing, and site logistics.
Thermopylae Sierra Guide - Sources and Updates
Last Updated
Research Sources
divecolombo.com · Operator
Describes the site as a signature Colombo wreck, reachable by boat in about 15 minutes, with marine-life and artificial-reef detail.
www.divesrilanka.com · Dive Directory
Provides the 23 m depth, boat time, wreck summary, and fish/coral descriptions.
www.tourismsrilanka.org · Official Tourism
Gives the west-coast diving season and general Colombo wreck-diving context.
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