corpsenail

The corpsenail, scientifically known as *Nebalia bipes*, is a small, translucent crustacean belonging to the order Nebaliida. Often referred to as a "ghost shrimp" or "corpsenail" due to its ghostly appearance and behavior, this species is found in shallow coastal waters, particularly in the North Atlantic and North Pacific Oceans. It is commonly encountered in intertidal zones, where it burrows into sand or mud.

Corpsenails are characterized by their elongated, segmented bodies, which can reach up to 2 centimeters in length. They possess two pairs of appendages: the first pair is modified into pincers, while the second pair functions as walking legs. Their bodies are semi-transparent, allowing internal structures to be visible, and they exhibit a faint reddish or brownish tint when alive. When disturbed or dead, they often take on a more ghostly, translucent appearance.

This species is primarily a scavenger and filter-feeder, consuming detritus, algae, and small organic particles. It plays a role in nutrient cycling within its ecosystem by breaking down organic matter. Corpsenails are also known for their unique reproductive behavior; males carry fertilized eggs in a brood pouch until they hatch.

Due to their small size and elusive nature, corpsenails are not typically harvested for human consumption. They are occasionally observed by intertidal foragers or marine biologists but are not considered economically significant. Their presence in coastal environments contributes to the overall biodiversity and ecological balance of these habitats.