What are the animals found in the hydrosphere?

The hydrosphere is home to a diverse range of animals, including various species of fish, mammals like dolphins and whales, amphibians such as frogs, and numerous invertebrates like jellyfish and octopuses. Aquatic ecosystems, such as oceans, rivers, and lakes, support these animals, each adapted to their specific environments. Additionally, organisms like plankton and coral play crucial roles in these habitats. Overall, the hydrosphere is vital for sustaining countless species and maintaining ecological balance.