noun
blue king crab
Scientific name Paralithodes platypus. A species of king crab.
アブラガニはタラバガニの一種で、青みがかった色をしている。
The blue king crab is a type of king crab and has a bluish color.
noun
striped shore crab
Scientific name Pachygrapsus crassipes. A small shore crab with striped legs. Also called 岩蟹.
See also: 岩蟹
岩場でアブラガニを見つけた。
I found a striped shore crab on the rocks.
油 (oil) + 蟹 (crab), likely referring to the crab's oily or rich meat, or its appearance.