---
title: "Blue Sea Star"
description: "Phataria unifascialis — Autres animaux. Phataria unifascialis is a species of starfish in the family Ophidiasteridae."
canonical: https://animalchecklist.com/fr/animal/blue-sea-star
last_updated: 2026-09-20
---

# Blue Sea Star

> Phataria unifascialis — Autres animaux. Phataria unifascialis is a species of starfish in the family Ophidiasteridae.

- Scientific name: *Phataria unifascialis*
- Category: `other` (Autres animaux)
- Habitats: `sea` (Mer et côte)
- iNaturalist observations: 1239
- Wikidata: [Q3197686](https://www.wikidata.org/wiki/Q3197686)
- iNaturalist taxon: [195833](https://www.inaturalist.org/taxa/195833)

## Names

- en: Blue Sea Star
- es: Estrella azul del Pacífico

## Countries with the most observations

EC (498), MX (403), CR (165), PA (12), NI (4), CO (3), SV (3)

## Summary

Phataria unifascialis is a species of starfish in the family Ophidiasteridae. It is sometimes known as the  blue seastar or tan starfish, but both these names are also used for other species (e.g., blue seastar for Linckia laevigata). It is native to the eastern Pacific Ocean where it ranges from the Gulf of California and Magdalena Bay (Mexico) to northwest Peru, including various eastern Pacific island groups such as the Galápagos. It remains fully active at temperatures down to 17 °C (63 °F), but becomes inactive when it drops to 14 °C (57 °F). It reaches a diameter of about 30 cm (1 ft).

Text: Wikipedia (en), CC BY-SA 4.0 — https://en.wikipedia.org/wiki/Phataria_unifascialis

## Photo

![Blue Sea Star](https://animalchecklist.com/img/animals/blue-sea-star/medium.jpg)

Photo: Andra Waagmeester · CC0 · inaturalist — https://www.inaturalist.org/observations/128922322

## Machine access

`GET https://animalchecklist.com/api/v1/animals/blue-sea-star?lang=fr` — see [openapi.json](https://animalchecklist.com/openapi.json).