Below-surface answers
Short answers to common planning questions. Conditions and rules are local; a general answer is never an entry authorisation.
Is clear water necessarily safe?
No. Visibility does not establish current strength, depth, boat traffic, access or suitability. Obtain a local assessment and stay within your training. Clear water can also make distance and depth difficult to judge.
Can I touch coral if it looks like rock?
No. Living tissue and small organisms can be difficult to recognise. Avoid touching, standing on or collecting reef material. Keep fins and loose equipment clear too. Read coral as living habitat.
Are lagoons always calm?
No. Wind, tides and exchange through passes can produce significant movement. Sheltered appearance does not establish safe swimming. Channels and reef openings deserve particular caution; use locally assessed, permitted areas. See inside lagoon systems.
Can an open-water diver enter an underwater cave?
An open-water qualification does not qualify you for cave entry. Overhead environments require the appropriate specialist training, equipment, planning and authorisation. A guide or visible daylight does not replace that training. Casual snorkellers should not enter tunnels or swim-throughs. Read the cave-environment limits.
Is snorkelling suitable if I am not a confident swimmer?
Do not assume it is. Discuss your ability with a qualified local provider and choose an appropriately supervised setting with suitable flotation, or remain ashore. Flotation does not remove current, weather, access or supervision requirements.
Is coral bleaching the same as coral death?
No. Bleaching indicates stress and loss of the usual symbiotic algae or their pigments. A bleached coral may recover, but can die if stress persists. Do not try to assess reef health from colour alone. NOAA explains coral bleaching.
How should I behave around turtles and rays?
Give them space, do not feed or pursue them, and never block their movement. Leave a clear route for a turtle to reach the surface. If an animal changes its behaviour because of your approach, increase your distance and follow local wildlife rules.
How do I choose a responsible operator?
Ask about site assessment, experience requirements, supervision, emergency arrangements and environmental conduct. Verify claimed credentials and avoid wildlife handling or feeding. A good operator accepts that conditions or readiness may require cancellation. Use our preparation guide for further questions.
Are the marine images destination photographs?
No. The site’s marine-object images are labelled conceptual illustrations, not destination photographs, navigation aids or evidence of current conditions. They simplify structures to support explanation and should not be used for species identification or trip planning.
Can this website replace a local briefing or training?
No. It provides general educational context, not individual medical advice, a dive plan, a forecast or specialist instruction. Consult the relevant authority and qualified professionals. In an emergency, contact local emergency services rather than the editorial desk.
Have a question about the wording or a source? Contact the editorial desk. We cannot assess whether a particular person or site is safe for entry.