. _:b76672104 . _:b76111088 . . . . _:b76111088 . _:b76672104 . "Ostrea gravitesta" . _:b76672104 "WoRMS id" . . _:b76672104 "605706" . _:b76111088 "6788964" . . . "6788964" . "Ostrea gravitesta Yokoyama, 1926" . . _:b76672104 . . "605706" . "681368" . _:b76111088 . "Ostrea gravitesta" . . _:b76111088 "GBIF id" . "Yokoyama, 1926" .