In addition to insects and their relatives, many other forms of invertebrates live within the park in both forest soils and aquatic ecosystems. Some of the most important and abundant are numerous species of zooplankton, tiny animals that form the base of many aquatic food chains. These include large numbers of minute crustaceans such as copepods, amphipods and native water fleas.
Photo by Minnesota Sea Grant
What are those "jelly blobs" on the beach?
Did You Know?
Bear claw marks can be seen on the trunks of American beech trees because the bark is so smooth. Bears climb trees for safety and to eat beech nuts. The non-native beech bark disease is sweeping through Pictured Rocks National Lakeshore, killing many beech trees. Trees scarred with bear claw marks will be harder to find. More...