Vesieliöiden
Vesieliöiden is a Finnish term that translates to "aquatic organisms" or "water dwellers." It is a broad classification encompassing all living beings that inhabit aquatic environments. This includes a vast diversity of life forms, ranging from microscopic bacteria and plankton to large marine mammals and fish. The environments where these organisms live are equally varied, including oceans, seas, lakes, rivers, ponds, wetlands, and even subterranean water systems.
The study of vesieliöiden falls under the scientific discipline of aquatic biology, which itself is a branch