Hanauma Bay
Oahu, Hawaii · 1–4 m · park · ticketed days
The textbook managed snorkel: video brief, closed on Tuesdays, carrying-capacity experiments since the 1970s.
Parks that wrote the modern code.
Darker cells mean a higher score for this topic on that metric.
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Use the local lens: coastguard/federation norms and the shop briefing for that bay — not a blog visibility claim.
Often yes in a park, and always a bad idea. A glove does not make a polyp tougher.
Statutes target ingredients such as oxybenzone. The science and the politics are both live; long sleeves work regardless.
In many countries, even empty shells and sand are restricted. Assume no souvenir.
Many parks specify 2–3 metres or more, no blocking the surface path. If the animal changes direction, the person is too close.
It changes behaviour and is banned in serious parks. The bread-ball boat is a failure mode.
These sites are famous because they had to invent management. Typical rules below are historical patterns, not today’s permit sheet.
Go where a ranger talks. The silent “secret reef” is often a trampling experiment.
Oahu, Hawaii · 1–4 m · park · ticketed days
The textbook managed snorkel: video brief, closed on Tuesdays, carrying-capacity experiments since the 1970s.
Palau · surface · lake · often closed/rotated
UNESCO Rock Islands; fins and sunscreen rules are strict, and the lake has closed when jellyfish or drought required it.
Sulu Sea, PH · 5–30 m · park · Mar–Jun season
A no-structure, permit-only UNESCO site; etiquette is the liveaboard brief and a ranger station.
Queensland, AU · 2–8 m · park · year-round, stinger season
GBRMPA zoning: green zones, stinger suits in summer, and a pontoon model that concentrates impact.
Bonaire · 2–20 m · often good · year-round
A shore-tag system and a long no-anchor culture; the Caribbean’s etiquette laboratory.
West Papua, ID · 2–30 m · park · Oct–Apr common
PIN entry and village rules; manta sanctuaries with distance codes.
Sinai, Egypt · 2–30 m · park · year-round, windy days
A national park at the Red Sea’s tip; the Yolanda wreck and reef both depend on no-take rules.
GBR, AU · 1–6 m · research cay · year-round
A research-station island where etiquette is also science logistics.
The famous etiquette sites are famous because they were damaged first. Pay the tag.