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See our science through the images below.
The zebra mussel (Dreissena polymorpha) is a small, non-native mussel originally found in Russia. In 1988, this animal was transported to North America in the ballast water of a transatlantic freighter and colonized parts of Lake St. Clair. In less than ten years, zebra mussels spread to all five Great Lakes.
The zebra mussel (Dreissena polymorpha) is a small, non-native mussel originally found in Russia. In 1988, this animal was transported to North America in the ballast water of a transatlantic freighter and colonized parts of Lake St. Clair. In less than ten years, zebra mussels spread to all five Great Lakes.
Male ruddy duck swimming in water.
Male ruddy duck swimming in water.
Female ruddy duck swimming in water.
Female ruddy duck swimming in water.
Mergansers swimming in water.
Hooded Merganser (Lophodytes cucullatus).
Hooded Merganser (Lophodytes cucullatus).
Monarch butterfly on dense blazing star.
Monarch butterfly on dense blazing star.
Image of the butterflies Danaus plexippus on the purple flowers of Liatris spicata.
Image of the butterflies Danaus plexippus on the purple flowers of Liatris spicata.
Rice Paper Butterfly on leaf.
Monarch butterfly on a dense blazing star.
Monarch butterfly on a dense blazing star.
Monarch butterfly on dense blazing star.
Monarch butterfly on dense blazing star.
Image of the butterflies Danaus plexippus on the purple flowers of Liatris spicata.
Image of the butterflies Danaus plexippus on the purple flowers of Liatris spicata.
Tropical waterlily.
Rice Paper Butterfly on leaf
Shining coneflower in Botanical Gardens.
Shining coneflower in Botanical Gardens.
Purple coneflower.
The world-famous Delicate Arch was formed by the movement of underground salt beds beneath overlying sandstone, in concert with surface events including water, ice, and erosion, which washed away or broke off the sandstone to create the arches and fins found throughout Arches National Park.
The world-famous Delicate Arch was formed by the movement of underground salt beds beneath overlying sandstone, in concert with surface events including water, ice, and erosion, which washed away or broke off the sandstone to create the arches and fins found throughout Arches National Park.
Raccoon paw print in mud.
Raccoon paw print in mud.
White-tailed deer tracks in the mud.
White-tailed deer tracks in the mud.
Grasses in the Wacissa River are part of the vegetative mat that makes for a difficult stream to make flow measurements.
Grasses in the Wacissa River are part of the vegetative mat that makes for a difficult stream to make flow measurements.
Lake Superior, Upper Peninsula of Michigan.
Lake Superior, Upper Peninsula of Michigan.
Lake Superior, Upper Peninsula of Michigan.
Lake Superior, Upper Peninsula of Michigan.