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Phylum Mollusca > Class Bivalvia > Family Mytilidae
Green mussel
Perna viridis
Family Mytilidae
updated Oct 2016
if you learn only 3 things about them ...
It is among our favourite seafood. But be careful about eating wild caught mussels.
It attaches itself to a hard surface by producing threads!
It is considered a pest outside its natural range.

Where seen? This edible clam is sometimes very common on our Northern shores, crowding any hard surface: rocks, pilings, floats. It is well adapted to waters that are murky and sediment laden.

Features: 5-8cm. The two-part shell is thin, smooth and usually brownish edged in green. The animal attaches to hard surfaces with byssus threads, usually in clusters of many individuals.

Human uses: Green mussels are considered the economically most important mussel in our region. They are farmed in many parts of Southeast Asia as seafood. They grow fast and in dense numbers. Like other filter-feeding clams, however, mussels may be affected by red tide and other harmful algal blooms. During such times, the mussels concentrate toxins and people who eat them may get seriously ill.

Outside its natural range of the Asia-Pacific region, the Green mussel is considered an introduced pest and an unwelcome invasive species. There, unchecked by natural predators, the mussels multiply rapidly and clog industrial pipes, foul aquaculture and disturb local ecosystems.

Growing on a large boulder.
Changi, Jan 04

Tiny green mussels
growing with tinier Nest mussels.
Pulau Sekudu, Jul 07

Growing in cracks of boulder.
Pulau Sekudu, Mar 07

Chek Jawa, Dec 03

Pasir Ris, Dec 08

Keppel Bay, Oct 09

Chek Jawa, Aug 05

Green mussels on Singapore shores

Photos of Green mussels for free download from wildsingapore flickr

Distribution in Singapore on this wildsingapore flickr map

Tuas, Mar 09
Photo shared by Loh Kok Sheng on flickr.


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