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Bonnet hammerhead (Sphyrna tiburo) — Sphyrnidae

Bonnet hammerhead

Sphyrna tiburo
Family: Sphyrnidae
EN · Endangered

The Bonnet hammerhead (Sphyrna tiburo) is a brackish-water fish of the family Sphyrnidae that grows up to 150 cm.

Length
150 cm
Water
Brackish
Depth
10.0–80.0 m
Diet
Carnivore
Behaviour
Small groups
Body shape
Elongated (eel-like)
Substrate
Stone or rock
Danger
Harmless
Edibility
Commonly eaten

Description

The bonnethead shark is a small hammerhead of the family Sphyrnidae from the western Atlantic and eastern Pacific. The species grows to about 1.5 metres and has the hammerhead-typical widened head, here rounded like a shovel or bonnet. It lives on continental and insular shelves, in inshore and coastal areas over mud and sand bottoms and on coral reefs, and tolerates brackish water. It feeds mainly on crabs, shrimps, molluscs and small fishes; remarkably, the species also eats and digests large amounts of seagrass, a unique form of omnivory among sharks. Owing to fishing it is listed as Endangered (EN). Though harmless, a hooked shark can bite.

Frequently asked questions

How do you recognise the Bonnet hammerhead?

The Bonnet hammerhead has an elongate, eel-like body, is mainly silver-grey and shows a plain pattern.

Where does the Bonnet hammerhead live?

The Bonnet hammerhead lives in brackish water and is mostly found around stony or rocky ground.

How big does the Bonnet hammerhead get?

The Bonnet hammerhead grows to a maximum of about 150 cm. On average the species is around 80 cm.

Is the Bonnet hammerhead dangerous to humans?

No, the Bonnet hammerhead is harmless to humans.

Is the Bonnet hammerhead edible?

Yes, the Bonnet hammerhead is commonly eaten.

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All data

Identification

Dutch name
Kaphamerhaai sourced
English name
Bonnet hammerhead verified
Scientific name
Sphyrna tiburo
Family
Sphyrnidae
Other names
Bonnet shark; Bonnethead verified

Appearance

Size class
Extra large verified
Max length (cm)
150.0 verified
Average length (cm)
80.0 verified
Body shape
Elongated (eel-like) sourced
Dominant colour
Silver / grey inferred
Pattern
Plain inferred
Tail shape
Crescent (lunate) inferred
Mouth position
Inferior (downward) inferred
Lips
Thin inferred
Barbels
No sourced
Dorsal fins
Two separate inferred
Dorsal spines
No sourced

Habitat & distribution

Water type
Brackish sourced
Substrate
Stone or rock sourced
Min depth (m)
10.0 verified
Max depth (m)
80.0 verified
Origin
Native sourced

Behaviour & biology

Diet
Carnivore sourced
Social behaviour
Small groups inferred
Territorial
No inferred
Reproduction
Separate sexes sourced
Sexual dimorphism
No inferred
levensduur_max_jaar
12.0 verified

For anglers

Edibility
Commonly eaten sourced
Fishing method
Vissen met natuurlijk aas (vis, garnaal, worm) of kunstaas dicht bij rif- en rotsstructuren. inferred
Regulations source
FishBase ↗ inferred

Safety

Danger to humans
Harmless sourced

Status & sources

Sources
FishBase via GBIF (DwC-A), CC-BY-NC 4.0

Same genus Sphyrna

More from the family Sphyrnidae

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