---
title: "Red Pencil Urchin"
description: "Heterocentrotus mamillatus — Andere dieren. Heterocentrotus mamillatus, commonly known as the slate pencil urchin, red slate pencil urchin, or red pencil urchin, is a species of tropical sea urchin from the Indo-Pacific region."
canonical: https://animalchecklist.com/nl/animal/red-pencil-urchin
last_updated: 2026-09-20
---

# Red Pencil Urchin

> Heterocentrotus mamillatus — Andere dieren. Heterocentrotus mamillatus, commonly known as the slate pencil urchin, red slate pencil urchin, or red pencil urchin, is a species of tropical sea urchin from the Indo-Pacific region.

- Scientific name: *Heterocentrotus mamillatus*
- Category: `other` (Andere dieren)
- Habitats: `sea` (Zee en kust)
- iNaturalist observations: 2784
- Wikidata: [Q277658](https://www.wikidata.org/wiki/Q277658)
- iNaturalist taxon: [348239](https://www.inaturalist.org/taxa/348239)

## Names

- en: Red Pencil Urchin
- de: Griffel-Seeigel
- fr: Oursin-crayon

## Countries with the most observations

US (2046), EG (160), NC (115), NF (47), MV (39), UM (25), IL (19), JP (17), ID (14), MU (14), VU (14), PF (13)

## Summary

Heterocentrotus mamillatus, commonly known as the slate pencil urchin, red slate pencil urchin, or red pencil urchin, is a species of tropical sea urchin from the Indo-Pacific region.

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

## Photo

![Red Pencil Urchin](https://animalchecklist.com/img/animals/red-pencil-urchin/medium.jpg)

Photo: TheMongrelKoi · CC0 · inaturalist — https://www.inaturalist.org/observations/45298615

## Machine access

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