The potato seed mentioned here is not the potato we often eat, but refers to the potato in the ocean-sea squirt, which is named because it looks like a potato. But the potato is a plant, but it is an animal. Sashimi refers to fish, raw fish, sashimi and the like, and refers to cutting fresh fish and shellfish into slices and eating them raw. Therefore, the potato seed sashimi is raw sea squirts.

Some kinds of sea squirts (true sea squirts, stipe sea squirts, kettle sea squirts, etc.) can be eaten in Japan and South Korea and become economic seafood.