Ver Léopard

Overview

Hesione splendida, often referred to as the leopard worm, is a segmented marine polychaete known for its distinctive appearance and wide distribution. These worms are typically found in both hard and soft bottom environments, ranging from intertidal zones to deeper infralittoral waters.

Appearance

This species features a short, robust body with a characteristic metallic luster. Its coloration is generally brown, accented by an intricate dorsal pattern of narrow, ivory-colored transverse lines and median white-yellowish circular patches. The head, or prostomium, is quadrangular and equipped with two pairs of reddish circular eyes. The body is segmented, and the worm possesses specialized parapodia that often exhibit brown and black spots.

Biology & behavior

Hesione splendida is known to be a protandrous hermaphrodite, meaning individuals may change sex as they mature. Like many other hesionids, these worms are relatively fragile and can easily fragment at their intersegmental boundaries if disturbed. They are generally active or ambush carnivores that utilize touch and chemoreceptors to detect moving prey in their environment, though they are also capable of ingesting non-living organic material. While they are not typically found in large aggregations, they are widely distributed across tropical and temperate marine regions, including the Red Sea, the Mediterranean, the Atlantic, and parts of the Pacific.