- beluga, hausen, white sturgeon, Acipenser huso - valuable source of caviar and isinglass; found in Black and Caspian seas
--1 is a kind of sturgeon
--1 is a member of Acipenser, genus Acipenser
--1 has parts: beluga caviar - white whale, beluga, Delphinapterus leucas - small northern whale that is white when adult
--2 is a kind of dolphin
--2 is a member of Delphinapterus, genus Delphinapterus