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Phylum Echinodermata > Class Echinodea > heart urchins
Oval heart urchin
awaiting identification
updated Jan 14
Where seen? Usually only their skeletons are seen on some of our shores. Usually only seen at night. In seagrass meadows near reefs, also under stones in submerged reefs. Often, only skeletons of dead ones are seen.

Features: 8-10cm long. Body oval egg-shaped, without a deep groove in the front. A large petaloid that can be seen even in living animals, with plain (unbanded) medium length to short spines densely covering the body.


Upperside. Several seen above ground
after the May 2010 oil spill at Tanah Merah.

Tanah Merah, May 10

Underside.
Tanah Merah, May 10

Mouth on the underside.



Upperside.
Pulau Sekudu, Dec 03


Underside.

Oval heart urchins on Singapore shores

Photos of Oval heart urchins for free download from wildsingapore flickr

Distribution in Singapore on this wildsingapore flickr map


Pulau Sekudu, Apr 09


Photo shared by Toh Chay Hoon on her blog.

Pulau Sekudu, Apr 09


Photo shared by Toh Chay Hoon on her blog.

Pulau Sekudu, May 10


Photo shared by Toh Chay Hoon on her blog.


Terumbu Selegie, Jun 11

Photo shared by Loh Kok Sheng on his blog.

Cyrene Reef, Jun 10

Little Sisters Island, Feb 15

Photo shared by Russel Low on facebook.


Kusu Island, Jun 12
Photo shared by Heng Pei Yan on her blog.

Pulau Jong, Jul 12
Photo shared by Loh Kok Sheng on his blog.
 

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