Hvelja

Hvelja is a genus of rays belonging to the family Rajidae. These cartilaginous fish are commonly known as skates. Skates are characterized by their flattened bodies, broad pectoral fins that are fused to the head, and long, whip-like tails. Unlike stingrays, skates typically do not possess a stinging barb on their tail.

Species within the genus Hvelja are found in marine environments worldwide, inhabiting both temperate and tropical waters. They are benthic organisms, meaning they live on or near the seabed. Skates are oviparous, laying eggs in leathery egg cases, often referred to as "mermaid's purses." Their diet consists mainly of small invertebrates and fish found on the ocean floor.

The classification of skates has undergone revisions over time, and Hvelja represents a significant group within the Rajidae family. Research into their genetics and morphology continues to refine our understanding of the evolutionary relationships among different skate species. Some Hvelja species are commercially fished, raising concerns about population sustainability in certain regions. Conservation efforts and fisheries management are important aspects of ensuring the long-term health of skate populations.