Classification
Within iNaturalist.org

All Names

  • French
    • Oursin
  • English
    • Sea Urchins, Sand Dollars and Heart Urchins
    • urchins
  • Scientific Names
    • Echinoidea
  • Spanish
    • Erizos de mar
  • Russian
    • Морские ежи
  • Belarusian
    • Марскія вожыкі
  • Japanese
    • ウニ綱

Extras

Taxonomic changes »

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Creative Commons Flickr Photos Tagged "Echinoidea."

Recent observations

Photos / Sounds

Square

What

Eccentric Sand Dollar Dendraster excentricus

Observer

finatic

Date

January 15, 2017 03:15 PM PST

Description

San Diego County, California, US

Photos / Sounds

Square

What

Eccentric Sand Dollar Dendraster excentricus

Observer

finatic

Date

January 15, 2017 03:00 PM PST

Description

San Diego County, California, US

Photos / Sounds

Square

What

Eccentric Sand Dollar Dendraster excentricus

Observer

finatic

Date

January 15, 2017 02:58 PM PST

Description

San Diego County, California, US

Photos / Sounds

Square

What

Eccentric Sand Dollar Dendraster excentricus

Observer

finatic

Date

January 15, 2017 01:52 PM PST

Description

San Diego County, California, US

Photos / Sounds

Square

What

Eccentric Sand Dollar Dendraster excentricus

Observer

finatic

Date

January 15, 2017 01:51 PM PST

Description

San Diego County, California, US

Photos / Sounds

Square

What

Eccentric Sand Dollar Dendraster excentricus

Observer

finatic

Date

January 15, 2017 01:37 PM PST

Description

San Diego County, California, US

Photos / Sounds

What

Isometric Sand Dollar Mellita isometra

Observer

kkaufman

Date

January 22, 2017 02:48 PM CST

Place

(Somewhere...)

Description

I'm not sure if these count as species, but I'd love to know what they are exactly!

Photos / Sounds

Square

Observer

budak

Date

June 13, 2014 05:22 AM SGT

Photos / Sounds

Square

Observer

budak

Date

June 13, 2014 03:46 AM SGT

Photos / Sounds

Square

What

Atlantic Purple Sea Urchin Paracentrotus lividus

Observer

flight69

Date

January 14, 2017 09:20 PM GMT

Photos / Sounds

Square

What

Atlantic Purple Sea Urchin Paracentrotus lividus

Observer

flight69

Date

January 14, 2017 09:20 PM GMT

Photos / Sounds

What

Kina Evechinus chloroticus

Observer

tony_wills

Date

January 20, 2017 05:08 PM NZDT

Description

The scale item is about 50mm diameter, so the kina must have been about 160mm diameter.

View all observations

Description from Wikipedia

Sea urchins or urchins, sometimes called sea hedgehogs, are small, spiny, globular animals which, with their close kin, such as sand dollars, constitute the class Echinoidea of the echinoderm phylum. There are c. 950 species of echinoids inhabiting all oceans from the intertidal to 5000 meters deep. Their shell, or "test", is round and spiny, typically from 3 to 10 cm (1.2 to 3.9 in) across. Common colors include black and dull shades of green, olive, brown, purple, blue, and red. They...

No range data available.
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