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Banded Egg Cowry

Margovula bimaculata

Description:

They feed on soft coral and gorgonians, and grow to about 2.5cm in length. This species belongs to the family Ovulidae (the ovulids), or false cowries.

Habitat:

Found on coral and rocky reefs. Widespread in the Indo-Pacific region.

Notes:

Spotted this tiny mollusk at a depth of about 25m at a dive site off northeastern coast of Samal Island. It measured less than 1cm. The 2nd picture shows the cowry shell; the other photos show its mantle extended and also its "foot". (The video is of another individual, spotted at a different time.)

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17 Comments

Blogie
Blogie 8 years ago

Updated this spotting with a video!

Gerardo Aizpuru
Gerardo Aizpuru 8 years ago

Sorry you all ready have it Bloge :)

Gerardo Aizpuru
Gerardo Aizpuru 8 years ago

Banded Egg Cowry / Diminovula bimaculata maybe
http://www.daveharasti.com/nelsonbay/sea...

Blogie
Blogie 8 years ago

Appreciate it, Jolly! :)

Jolly Ibañez
Jolly Ibañez 8 years ago

Ok. If I'll find anything, I'll let you know.

Blogie
Blogie 8 years ago

Yeah, that's the site where I saw the species name. However, there seems to be a disagreement among references regarding the scientific name. Yeah, I'll check if Shauming can help (although last time we discussed cowries, he didn't seem to be very keen). Thanks again!

Jolly Ibañez
Jolly Ibañez 8 years ago

Hi blogie, I guess you already have a positive ID for this specie. I could not find anything more definite. Try here: http://www.daveharasti.com/nelsonbay/sea... and you can also try to consult shauminglo on this.

Blogie
Blogie 8 years ago

Found very similar-looking cowries on the Web, and the species name attached to them is Diminovula margarita. Can't find this scientific name in the usual references, though...

BrandonBlount
BrandonBlount 8 years ago

Awesome! Thank you for the info! :-D

Blogie
Blogie 8 years ago

Hi Brandon. Those spiny protrusions are part of the animal's mantle. Some cowries have bristle-like protrusions and others have just a smooth mantle. :)

BrandonBlount
BrandonBlount 8 years ago

What a neat organism! I wouldn't want to be a soft fleshy coral with this guy around! Are those spiny protrusions a standard shell feature for these guys or is there something else behind them?

Blogie
Blogie 8 years ago

Yes, the photos are in correct order. The 1st picture is the very 1st one I took. Then I inadvertently caused the critter to retract because my camera's port disturbed it, and it fell off the soft coral. The 2nd photo shows the shell after I put it back on the coral. After a little while, it started to come out of its shell again, and that's shown in the 3rd & 4th pictures. :)

Ashish Nimkar
Ashish Nimkar 8 years ago

3rd and 4th shots are cool... are they in correct series..?

Blogie
Blogie 8 years ago

Thanks very much, Gerardo & Ashish!

Ashish Nimkar
Ashish Nimkar 8 years ago

Amazing Organism...Great efforts..!!

Gerardo Aizpuru
Gerardo Aizpuru 8 years ago

Grate series as always Blogie!

Blogie
Spotted by
Blogie

Davao Del Norte, Philippines

Spotted on May 6, 2012
Submitted on May 20, 2012

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