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Balanus trigonus in life
In life — Triangle Barnacle, photographed by an iNaturalist observer, not this specimen. (c) anasacuta, some rights reserved (CC BY), uploaded by anasacuta
BPBM 373Invertebrate Zoology

Balanus trigonus

Triangle Barnacle

As recorded: Balanus trigonus Darwin, 1854

Animalia › Arthropoda › Maxillopoda › Sessilia › Balanidae

Locality
Sasebo
Island
Kyushu
Region
Japan
Record type
Preserved specimen
45 Bishop specimens of Balanus trigonusSpecies page ›

Balanus trigonus observed alive

Since 2000, iNaturalist observers have recorded 831 research-grade sightings in the wild, most recently on 2026-10-17.

Balanus trigonus observed 2026-10-17

2026-10-17

Opito Bay Beach, Whitianga, Waikato, NZ

(c) nzfernbird, some rights reserved (CC BY-NC)

Balanus trigonus observed 2026-08-28

2026-08-28

Christchurch City, Canterbury Region, New Zealand

(c) Mac Durning, some rights reserved (CC BY-NC)

Balanus trigonus observed 2026-08-24

2026-08-24

Santa Cruz, EC-GA, EC

(c) Billy Bensted-Smith, some rights reserved (CC BY-NC)

Balanus trigonus observed 2026-08-22

2026-08-22

Sanibel, FL, US

(c) diego, some rights reserved (CC BY-NC)

Balanus trigonus observed 2026-08-08

2026-08-08

Καλαμαριά, Ελλάδα

(c) Platon Kleanthidis, some rights reserved (CC BY-NC)

Balanus trigonus observed 2026-08-06

2026-08-06

Florida, US

(c) familiarjumpingspider, some rights reserved (CC BY)

Observations and photos from iNaturalist, shown only when openly licensed.

Cite this specimen

Balanus trigonus. BPBM 373. Bernice Pauahi Bishop Museum, Honolulu. GBIF occurrence 35414415. Accessed via explore.bishopmuseum.org/specimens/b/373.

Record sources