Jenkins' Whipray

Overview

The Jenkins' Whipray is a large, bottom-dwelling stingray widely distributed across the tropical and subtropical waters of the Indo-Pacific. It is frequently encountered in shallow coastal environments, where it is often found resting on sandy or silty substrates.

Appearance

This species is characterized by a broad, diamond-shaped pectoral fin disc that is slightly wider than it is long. Its dorsal surface is typically a uniform yellowish-brown, while the underside is white. A key identifying feature is the presence of a prominent band of heart-shaped dermal denticles running along the midline from the shoulder area, accompanied by a distinct row of large, spear-shaped thorns. The tail is long and whip-like, lacking fin folds, and often fades to black beyond the stinging spine.

Distribution & habitat

Jenkins' Whipray occurs across the Indo-West Pacific, ranging from South Africa and the Indian Ocean to Southeast Asia, Papua New Guinea, and northern Australia. It primarily inhabits inshore coastal waters, including sandy flats and areas near coral reefs, typically at depths shallower than 50 meters, though it has been recorded at greater depths.

Biology & behavior

This ray is aplacental viviparous, meaning embryos develop inside the mother and receive nourishment through specialized structures that provide uterine fluid, often referred to as "uterine milk." It is known to exhibit distinct mating behavior involving a pairing embrace. While generally solitary, these rays are sometimes observed in aggregations over soft-bottom habitats.

Feeding

Its diet consists primarily of small bony fishes, crustaceans, and various mollusks found along the seafloor.