The sandcastle worm, as the creature is known, lives in a mineral shell.

沙堡蠕虫，正如它的名字那样，带有一个矿质外壳。

The sandcastle worm, as the beast is known, lives in a mineral shell.

这种蠕虫被称为堆沙蠕虫，生活在矿物质的壳中。