X-ray of a fish on a black background with a white paper attached to it

Close up of a snail shell on a ruler next to a piece of paper with…

Gold nugget on a black background

Box containing two clams on top of a table

Black and white microscopic view of a gastrula

Small wooden object on a white tray with a ruler next to it

Rock with an orange tag on it next to a ruler

Bee sitting on top of a white surface

Blue and white vase with a lid