Shore life · La Saladita, Guerrero

Wandering Hammerhead Worm

Bipalium vagum

Spanish: Planaria asiática cabeza de martillo

Wandering Hammerhead Worm (Bipalium vagum)
Photographed by vctrndr on iNaturalist

Bipalium vagum is a land planarian in the subfamily Bipaliinae. It has been accidentally introduced in the United States and Bermuda. Most often recorded in Oct.

TaxonomyTricladida › Geoplanidae
Local records1 research-grade observation within about 50 km of La Saladita (the survey box also takes in Zihuatanejo, Ixtapa and Troncones)
Global records2,536 on iNaturalist
Recorded here2021 – 2021
Months recorded near La Saladita
JanFebMarAprMayJunJulAugSepOctNovDec
Recent local sightings

Interactive card with more photos, sounds and similar species Shore life guide iNaturalist Wikipedia

Cite as: “Wandering Hammerhead Worm (Bipalium vagum) at La Saladita”, La Saladita Field Guide, lasaladita.com/species/bipalium-vagum/, updated 2026-09-26. Observation counts and months come from iNaturalist research-grade records within about 50 km of 17.8375°N, 101.7606°W (the survey box also takes in Zihuatanejo, Ixtapa and Troncones); summary text from Wikipedia where present.