#2052 · 🦈 sharks & rays
Bonnethead
🇳🇱 Kaphamerhaai ·Sphyrna tiburo
7 photos from iNaturalist (Creative Commons) · credits & licences
what is it?
The bonnethead shark or shovelhead ( Sphyrna tiburo ) is a small member of the hammerhead shark genus Sphyrna , and part of the family Sphyrnidae. It is an abundant species on the American littoral, and the only shark species known to display sexual dimorphism in the morphology of the head.
base stats
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.
- 1,547 observations worldwide on iNaturalist.
- Scientifically named in 1758 (268 years ago).
- Listed as Endangered on the IUCN Red List.
fact sheet
- English
- Bonnethead
- Nederlands
- Kaphamerhaai
- scientific name
- Sphyrna tiburo
- class
- Chondrichthyes
- order
- Carcharhiniformes
- family
- Sphyrnidae
- IUCN Red List
- EN · endangered
- sightings in NL
- 0
- sightings worldwide
- 1,547
- GBIF records in NL
- 0
- weight
- —
- length
- —
- lifespan
- —
- named
- 1758
IUCN in Dutch: bedreigd. Blank means the sources don't say.
relatives· Sphyrnidae
Sources: iNaturalist taxon 112960, Wikidata Q338891, GBIF 2418800, Wikipedia (EN), Wikipedia (NL). Intro text from Wikipedia (CC BY-SA 4.0).Updated 2026-10-24.