---
title: "Slate pencil urchin"
description: "Eucidaris thouarsii — Inne zwierzęta. Eucidaris thouarsii, the slate pencil urchin (named after slate pencil), is a species of cidaroid sea urchins that inhabits littoral regions of the East Pacific Ocean."
canonical: https://animalchecklist.com/pl/animal/slate-pencil-urchin-eucidaris-thouarsii
last_updated: 2026-09-20
---

# Slate pencil urchin

> Eucidaris thouarsii — Inne zwierzęta. Eucidaris thouarsii, the slate pencil urchin (named after slate pencil), is a species of cidaroid sea urchins that inhabits littoral regions of the East Pacific Ocean.

- Scientific name: *Eucidaris thouarsii*
- Category: `other` (Inne zwierzęta)
- Habitats: `sea` (Morze i wybrzeże)
- iNaturalist observations: 758
- Wikidata: [Q3204442](https://www.wikidata.org/wiki/Q3204442)
- iNaturalist taxon: [57294](https://www.inaturalist.org/taxa/57294)

## Names

- en: Slate pencil urchin
- es: Erizo punta de lapiz

## Countries with the most observations

MX (544), CR (66), EC (47), PA (28)

## Summary

Eucidaris thouarsii, the slate pencil urchin (named after slate pencil), is a species of cidaroid sea urchins that inhabits littoral regions of the East Pacific Ocean.

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

## Photo

![Slate pencil urchin](https://animalchecklist.com/img/animals/slate-pencil-urchin-eucidaris-thouarsii/medium.jpg)

Photo: Robbie Hannawacker · CC0 · inaturalist — https://www.inaturalist.org/observations/19260953

## Machine access

`GET https://animalchecklist.com/api/v1/animals/slate-pencil-urchin-eucidaris-thouarsii?lang=pl` — see [openapi.json](https://animalchecklist.com/openapi.json).