Public domain photos

The image shows a freshwater mussel resting on a wooden table. Its shell is a light brown color with a glossy sheen, and its interior is a darker shade of brown. Its ridges and grooves are visible, and it has a small opening at the top.

The image shows a freshwater mussel resting on a wooden table. Its shell is a light brown color with a glossy sheen, and its interior is a darker shade of brown. Its ridges and grooves are visible, and it has a small opening at the top.Open in library