Mactromeris polynyma (Stimpson, 1860)
Arctic surfclam
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Family:  Mactridae (trough shells)
Max. size:  16 cm SHL (male/unsexed); max. reported age: 73 years
Environment:  benthic; marine; depth range 0 - 200 m
Distribution:  Northeast Pacific and the Arctic: Alaska, Canada and USA. Subtropical to polar.
Diagnosis:   
Biology: 
IUCN Red List Status: Not Evaluated (N.E.) Ref. 123251)
Threat to humans: 
Country info:   
 

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