noun
echiurid; spoon worm
General term for echiurid worms, a group of marine invertebrates.
ユムシは海底の砂泥中に生息する。
Spoon worms live in the sandy mud of the seafloor.
noun
fat innkeeper worm; penis fish
Specifically Urechis unicinctus, a species of spoon worm eaten in East Asia. The colloquial English name 'penis fish' is a direct translation of its shape.
韓国ではユムシを食材として利用する。
In Korea, fat innkeeper worms are used as food.