---
title: "Graceful Rock Crab"
description: "Metacarcinus gracilis — Inne zwierzęta. The graceful rock crab or slender crab, Metacarcinus gracilis (the naming convention recognized by WoRMS) or Cancer gracilis (the naming convention recognized by ITIS), is one of two members of the genus Metacarcinus, with white tipped chelae (claws)."
canonical: https://animalchecklist.com/pl/animal/graceful-rock-crab
last_updated: 2026-09-20
---

# Graceful Rock Crab

> Metacarcinus gracilis — Inne zwierzęta. The graceful rock crab or slender crab, Metacarcinus gracilis (the naming convention recognized by WoRMS) or Cancer gracilis (the naming convention recognized by ITIS), is one of two members of the genus Metacarcinus, with white tipped chelae (claws).

- Scientific name: *Metacarcinus gracilis*
- Category: `other` (Inne zwierzęta)
- Habitats: `sea` (Morze i wybrzeże)
- iNaturalist observations: 4169
- Wikidata: [Q5234072](https://www.wikidata.org/wiki/Q5234072)
- iNaturalist taxon: [116721](https://www.inaturalist.org/taxa/116721)

## Names

- en: Graceful Rock Crab
- es: Cangrejo Elegante

## Countries with the most observations

US (2923), CA (1063), MX (13)

## Summary

The graceful rock crab or slender crab, Metacarcinus gracilis (the naming convention recognized by WoRMS) or Cancer gracilis (the naming convention recognized by ITIS), is one of two members of the genus Metacarcinus, with white tipped chelae (claws). The second crab in the genus to have white tipped claws is M. magister (Dungeness crab). Both of these eastern Pacific crab species are recognized by ITIS as belonging to the much larger genus Cancer. M. gracilis has been caught from Alaska to Bahía Magdalena, Baja California Sur. Although M. gracilis is only found in the Pacific Ocean, it has cousins in the Atlantic…

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

## Photo

![Graceful Rock Crab](https://animalchecklist.com/img/animals/graceful-rock-crab/medium.jpg)

Photo: Sean Haight · CC0 · inaturalist — https://www.inaturalist.org/observations/286929427

## Machine access

`GET https://animalchecklist.com/api/v1/animals/graceful-rock-crab?lang=pl` — see [openapi.json](https://animalchecklist.com/openapi.json).