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Phylum Echinodermata > Class Echinodea > heart urchins
Keeled heart urchin
Brissus latecarinatus
updated Apr 2020
Where seen? Usually only their skeletons are seen on some of our shores. Living ones are generally seen above ground only at night. They are usually buried in the sand. In seagrass meadows near reefs, also under stones in submerged reefs.

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.

Keeled heart urchins on Singapore shores
On wildsingapore flickr

Other sightings on Singapore shores


Changi, Apr 20
Photo shared by Jonathan Tan on facebook.


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.


Pulau Sekudu, Jun 17


Photo shared by Loh Kok Sheng on facebook.

Little Sisters Island, Feb 15

Photo shared by Russel Low on facebook.


Terumbu Selegie, Jun 11

Photo shared by Loh Kok Sheng on his blog.

Cyrene Reef, Jun 10

Cyrene Reef, Aug 18

Photo shared by Jonathan Tan 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.


Beting Bemban Besar, Nov 18
Photo shared by Juria Toramae on facebook.

Beting Bemban Besar, Jul 20

Photo shared by Dayna Cheah on facebook.

References
  • New records of the keeled heart urchin, Brissus latecarinatus, in Singapore. 27 March 2020. Ria Tan, Teresa Stephanie Tay & Neo Mei Lin. Singapore Biodiversity Records 2020: 26-27 ISSN 2345-7597.
  • Brissus latecarinatus on SeaLife Base: Technical fact sheet.

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