Found in a muddy area, dubbed Twin Peaks, this vibrant worm uses its acorn-shaped head to burrow into the sea floor.

The Hachiya persimmon is the acorn-shaped one, and buyer beware -- it needs to be almost melting in texture before you eat it.

One type of persimmon, the Hachiya, is acorn-shaped and needs to be almost melting in texture before you eat it.