Zeewatermilieu
Zeewatermilieu refers to the aquatic environment composed of saltwater, predominantly oceans and seas. This vast habitat is characterized by its high salinity, typically ranging from 30 to 35 parts per thousand, a result of dissolved mineral salts. The zeewatermilieu supports an immense diversity of life, from microscopic plankton to the largest whales, forming complex food webs and ecosystems. Key abiotic factors include temperature, pressure, light penetration, and currents, which vary significantly with depth and location. Major oceanic zones include the pelagic zone (open water) and the benthic zone (seafloor), each with distinct communities adapted to their specific conditions. Coral reefs, kelp forests, and deep-sea hydrothermal vents are examples of highly productive and unique zeewatermilieus. These environments play a crucial role in global climate regulation, oxygen production, and nutrient cycling. Human activities such as pollution, overfishing, and climate change pose significant threats to the health and biodiversity of the zeewatermilieu, necessitating conservation efforts.