I roasted an acorn squash with maple syrup and thyme for dinner.

I tightened the acorn nut onto the bolt to protect the exposed threads and improve the assembly's appearance.

A lone sea acorn clung to a rock in the intertidal zone as waves pounded it.

Peat samples contained traces of acorn sugar that hinted at the formation of quercite over millennia.

After the storm, dozens of acorn barnacles clung to the underside of the pier's pilings.

The tide pool was dotted with acorn barnacle clusters clinging to the rocks.

Although it looks like a simple invertebrate, the acorn worm displays primitive chordate features such as a dorsal nerve cord and pharyngeal gill slits.

The children collected acorn nuts in their baskets during the autumn festival.

Acorn worms burrow in muddy sand along the shoreline, filtering detritus as they move.

At the museum workshop, a Miwok elder taught the children how to play the acorn game, sharing stories about its role in community life.