Fauna
Fish

Whitetip Reef Shark

Triaenodon obesus

Also known as Blunt-head Shark, Whitetip Shark

Whitetip reef sharks are agile, bottom-dwelling predators easily recognized by the brilliant white tips on their dorsal and tail fins. Unlike many open-water sharks, they can actively pump water over their gills, allowing them to rest motionlessly on the seabed or inside dark reef caves during the day. At night, they weave through narrow coral crevices in small groups, flushing out sleeping fish and octopuses from tight hiding spots.

Coral ReefNocturnalCarnivore
Whitetip Reef Shark reference1 / 7
Unknown authorUnknown author / Public domain · cc0
—observations
—countries
—peak records
VulnerableConservation statusIUCN Red List categoriesLCNTVUENCREWEXVulnerableRed List categories, explained →
Key facts
Diet & preyDamselfish, Octopus, Crabs
Predators
  • Tiger Shark
  • Galapagos Shark
  • Giant Grouper
ThreatsOverfishing, coral habitat degradation, accidental bycatch
HabitatsCoral reefs, lagoons, shallow coastal slopes
Life span20–25 years
Classification
  1. OrderCarcharhiniformes
  2. FamilyCarcharhinidae
  3. GenusTriaenodon
  4. SpeciesTriaenodon obesus
Range & activity
Range data is not available yet.
Safe observation
Interaction riskHigh
  1. Low
  2. Moderate
  3. High
  4. Very high
Why interaction risk is high
Generally placid toward divers, but capable of biting if cornered, baited, or harassed.
Why it is dangerous
Sharp teeth and powerful jaws can inflict serious puncture wounds if the shark is cornered, baited, or harassed.
How to recognize a risky encounter
Slender grey body, short broad snout, and conspicuous white tips on the first dorsal and upper tail fins.
What to do
Give resting sharks space in caves, maintain a safe distance while diving, and never attempt to feed or touch them.
What to notice
Slender reef-dwelling shark with conspicuous white tips on dorsal and tail fins, often resting on sandy seabed floors.
Support conservation
Avoid approaching resting individuals in caves, minimize torch light directly in their eyes, and respect marine protected area rules.
Responsible observation
  • Cave Etiquette: Avoid blocking cave entrances where sharks rest during daylight hours to prevent stress.
  • Night Diving: Observe foraging behavior using diffused dive lights, avoiding direct beams in their eyes.
  • Safe Observation: Maintain a calm posture in the water and avoid making sudden movements or trailing speared fish.
Related species
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