Ensis directus (Atlantic Jackknife Clam) is a species of mussels in the family Pharidae. This species is extinct. They are associated with freshwater habitat. They are native to Atlantic Ocean. Dead Atlantic Jackknife Clam form shallow marine sediments. They are surficial modifiers. Individuals could grow to 100 mm. They have sexual reproduction. They are facultatively mobile animals.
EOL has data for 43 attributes, including: