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#2045 · 🦈 sharks & rays

Scalloped Hammerhead

🇳🇱 Geschulpte hamerhaai ·Sphyrna lewini

CRcritically endangered 🦈 Sharks & rays 📍 outside Europe
Scalloped Hammerhead, photo 1 of 10
1/10 © Kris Mikael Krister · CC BY 4.0

what is it?

The scalloped hammerhead ( Sphyrna lewini ) is a species of hammerhead shark, and part of the family Sphyrnidae. Originally known as Zygaena lewini , its genus name was later changed to its current name. The Greek word sphyrna translates into "hammer" in English, referring to the shape of this shark's head. The most distinguishing characteristic of this shark, as in all hammerheads, is the 'hammer' on its head. The shark's eyes and nostrils are at the tips of...

base stats

  • NL sightings 0iNaturalist, research grade
  • worldwide 2,050iNaturalist observations
  • threat CRcritically endangered

Bars compare against all animals on log scales: up to 300,000 Dutch and 600,000 worldwide sightings (the most-seen species), 150 t (blue whale), 30 m and 400 years (Greenland shark).

fun facts

  • No confirmed wild sightings in the Netherlands on iNaturalist: you'd have to travel for this one.
  • 2,050 observations worldwide on iNaturalist.
  • Scientifically named by Charles Hamilton Smith in 1834 (192 years ago).
  • Listed as Critically Endangered on the IUCN Red List.

fact sheet

English
Scalloped Hammerhead
Nederlands
Geschulpte hamerhaai
scientific name
Sphyrna lewini
class
Chondrichthyes
order
Carcharhiniformes
family
Sphyrnidae
IUCN Red List
CR · critically endangered
sightings in NL
0
sightings worldwide
2,050
GBIF records in NL
0
weight
—
length
—
lifespan
—
named
1834 by Charles Hamilton Smith

IUCN in Dutch: ernstig bedreigd. Blank means the sources don't say.

relatives· Sphyrnidae

Sources: iNaturalist taxon 56764, Wikidata Q873701, GBIF 2418789, Wikipedia (EN), Wikipedia (NL). Intro text from Wikipedia (CC BY-SA 4.0).Updated 2026-10-24.

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