Why is osmoregulation is necessary to aquatic animals?

Osmoregulation is crucial for aquatic animals as it helps maintain the balance of water and solutes in their bodies, ensuring cellular function and overall homeostasis. In varying aquatic environments, such as freshwater or saltwater, these animals face osmotic pressure that can lead to excess water intake or loss of fluids. Effective osmoregulation allows them to adapt to these conditions, preventing dehydration or cellular swelling, which can be detrimental to their survival. Ultimately, it supports their metabolic processes and helps them thrive in their specific habitats.