A blacktip reef shark swims over sandy seabed.
SharksVulnerableDecreasing trend

Blacktip Reef Shark

Carcharhinus melanopterus

A small, shallow-water requiem shark recognized by black-tipped fins, commonly found on tropical Indian and Pacific coral reefs.

Last Updated Mar 9, 2026 · 4 sources

Species Guide

What to know about blacktip reef sharks

A clean field guide focused on habitat, identification, behavior, and conservation context without burying the useful parts.

The blacktip reef shark is a requiem shark identifiable by prominent black tips on its fins, especially the first dorsal and caudal fins. It inhabits tropical coral reefs of the Indian and Pacific Oceans and prefers shallow, inshore waters such as reef ledges and sandy flats, and can enter brackish and freshwater environments. Adults typically reach about 1.6 m (5.2 ft), with females larger than males. This species has very small home ranges and strong site fidelity, often remaining in the same local area for years. It is an active predator of small bony fish, cephalopods, and crustaceans, and has been recorded feeding on sea snakes and seabirds. Reproduction is viviparous: females give birth to two to five young on cycles reported as annual, biennial, or possibly biannual; reported gestation periods vary geographically. The species is generally timid and skittish, rarely posing a danger to humans unless provoked by food, though shallow-water wading can result in accidental bites. The blacktip reef shark is used for meat, fins, and liver oil.

Although widespread and relatively common overall, the species has declined in several areas due to overfishing of this slow-reproducing shark; it is assessed as Vulnerable by the IUCN.

Shows extremely small home ranges and strong site fidelity, often remaining within the same local area for up to several years.

The strongest linked planning options currently surface around destinations such as Koh Lanta, Koh Phi Phi (Phi Phi Islands), Krabi (Ao Nang and Railay) and countries such as Indonesia, Thailand, Malaysia for divers building trips around blacktip reef sharks.

Identification

How to identify blacktip reef sharks

The visual markers divers can use underwater, plus the species most likely to cause confusion.

Key identification markers

Black-tipped fins

Prominent black tips on fins, especially the first dorsal fin and the caudal fin, are distinctive.

Size and shape

A relatively small reef shark reaching about 1.6 m (5.2 ft); females are larger than males.

Range and Movement

How blacktip reef sharks move through the world

The broad range, seasonal movement, or migratory behavior that shapes where divers encounter this species.

Shows extremely small home ranges and strong site fidelity, often remaining within the same local area for up to several years.

Diet

What blacktip reef sharks tend to eat

Useful feeding context that often explains habitat, movement, and encounter style.

Active predator of small bony fish, cephalopods, and crustaceans; has also been reported to feed on sea snakes and seabirds.

Conservation

What is happening with Blacktip Reef Sharks

Status, pressure, and protection context grounded in cited sources rather than filler.

Although widespread and relatively common overall, the species has declined in several areas due to overfishing of this slow-reproducing shark; it is assessed as Vulnerable by the IUCN.

Main threats

Overfishing

The species is taken for meat, fins, and liver oil; overfishing has caused declines in multiple locales.

Responsible Encounters

How to dive with blacktip reef sharks

Conservation-minded guidance for divers who want the encounter without adding pressure.

Typically timid and skittish; avoid feeding or provoking sharks. Be cautious when wading in shallow water to reduce risk of accidental bites.

Field Notes

Interesting things worth knowing

Useful species context that makes the encounter more meaningful once you are underwater.

Field notes

Viviparous reproduction

Females give birth to two to five live young; reported reproductive cycles and gestation lengths vary geographically.

Shallow-water specialist

Prefers shallow, inshore reef ledges and sandy flats and can enter brackish and freshwater environments.

Strong site fidelity

Individuals often remain within the same local area for years due to very small home ranges.

Top Destinations

Top destinations to see blacktip reef sharks

Destinations surfaced from the linked dive spots associated with this species.

Top Countries

Top countries for blacktip reef sharks

The strongest country-level starting points currently linked to this species.

Top Dive Spots

Top dive spots for blacktip reef sharks

Directly linked dive spots where this species already shows up in the planning data.

Malibu Point dive spot

Malibu Point

Malibu Point is an advanced Nusa Penida site where a steep reef transitions into

Toyapakeh Wall dive spot

Toyapakeh Wall

Current-sensitive Nusa Penida wall with coral terraces and big-life chance.

Japanese Gardens Koh Tao dive spot

Japanese Gardens Koh Tao

Shallow Koh Nang Yuan coral garden for easy dives and snorkeling.

5.0
2 dives
AccessEasy entry
San Pedro Canyons - Belize dive spot

San Pedro Canyons - Belize

Boat-access canyon dive in front of San Pedro Town.

4.2
5 dives
AccessSimple entry
CoralHealthy coral
Marine LifeExceptional variety
CrowdVery quiet
7 Mile Reef dive spot

7 Mile Reef

Advanced outer reef with walls, soft corals, and pelagic fish life.

Airport  Beyru dive spot

Airport Beyru

Airport-side reef with a gentle slope and reef-life action

FAQ

Frequently asked questions

Clear planning and conservation answers written for search visibility and AI retrieval.

Research Sources

Blacktip Reef Shark information sources

Primary and credible references behind the field-guide and conservation claims on this page.

Sources 4Last Updated
Florida Museum · Reference · Florida Museum

Supporting wildlife source.

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