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Ginglymostoma Unami

This species belongs to the nurse shark family, a group better known for bottom-resting patience than for speed. Look for barbels, a broad head, and a habit of cruising slowly over reef and sand. Nurse sharks have a broad head, two barbels near the mouth, small eyes, and a generally soft, rounded appearance compared with active requiem sharks. Nurse sharks and close relatives occur mainly in tropical and subtropical coastal waters of the Atlantic and Indo-West Pacific. Species ranges vary from broad warm-water distributions to more regional patterns.

Ginglymostoma unami
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Overview

This species belongs to the nurse shark family, a group better known for bottom-resting patience than for speed. Look for barbels, a broad head, and a habit of cruising slowly over reef and sand. Nurse sharks have a broad head, two barbels near the mouth, small eyes, and a generally soft, rounded appearance compared with active requiem sharks. Nurse sharks and close relatives occur mainly in tropical and subtropical coastal waters of the Atlantic and Indo-West Pacific. Species ranges vary from broad warm-water distributions to more regional patterns.

They favor shallow reefs, sandy flats, channels, lagoons, mangrove edges, and other structured coastal habitats where resting cover is available.

Why it matters: The mouth works like a suction tool, helping these sharks pull prey from crevices.

Scientific nameGinglymostoma unami
FamilyGinglymostomatidae
OrderOrectolobiformes

What this shark is

Nurse sharks have a broad head, two barbels near the mouth, small eyes, and a generally soft, rounded appearance compared with active requiem sharks.

Where it lives

Nurse sharks and close relatives occur mainly in tropical and subtropical coastal waters of the Atlantic and Indo-West Pacific. Species ranges vary from broad warm-water distributions to more regional patterns.

They favor shallow reefs, sandy flats, channels, lagoons, mangrove edges, and other structured coastal habitats where resting cover is available.

How it differs from similar sharks

Body shape, size, and habitat are the main cues that separate it from related sharks.

Compare it against Nurse Shark, Tawny nurse shark, and Short-tail nurse shark.

Why it is notable

They are often approachable and usually calm, but a provoked or restrained nurse shark can bite hard and hold on. Habitat change and fisheries also affect some populations.

Related shark pages

These links are meant to help readers continue through related species, not force extra clicks.

NOAA photograph of a nurse shark resting at Gray's Reef National Marine Sanctuary; not to scale.
Ginglymostoma cirratum

Nurse Shark

Bottom-dwelling shark with a slow, steady pace.

3.2 m maxNear Threatened
Tawny nurse shark reference photograph showing the long barbels and broad rounded fins; not to scale.
Nebrius ferrugineus

Tawny nurse shark

Common name: giant sleepy shark

This species belongs to the nurse shark family, a group better known for bottom-resting patience than for speed. Look for barbels, a broad head, and a habit of cruising slowly over reef and sand.

3.2 m max
Historic short-tail nurse shark reference image showing the broad head and shortened tail region; not to scale.
Pseudoginglymostoma brevicaudatum

Short-tail nurse shark

Common name: nurse shark

This species belongs to the nurse shark family, a group better known for bottom-resting patience than for speed. Look for barbels, a broad head, and a habit of cruising slowly over reef and sand.

0.8 m max