Leptosynapta clarki

Leptosynapta clarki, is a species of sea cucumber in the family Synaptidae.^[1] Commonly called skin breathing sea cucumbers, they live along the northwest coast of North America, from northern California to the Gulf of Alaska. They are pink and gelatinous and partially translucent, and are about 0.5 in (1.3 cm) long, but can reach up to 6 in (15 cm). The burrow in sand along the low tideline. On rare occasions, when low tides and high surf conditions combine, thousands of these sea cucumbers can wash up on beaches to dry up and die, such as on October 21, 2025, in Seaside, Oregon.^[2]

Leptosynapta clarki
Scientific classification
Kingdom:	Animalia
Phylum:	Echinodermata
Class:	Holothuroidea
Order:	Apodida
Family:	Synaptidae
Genus:	Leptosynapta
Species:	L. clarki
Binomial name
Leptosynapta clarki Heding, 1928