Holothuria arguinensis is a species of sea cucumber in the family Holothuriidae and subgenus Roweothuria.

[1] It is found in waters off the northeast Atlantic Ocean and Mediterranean Sea.

[2][3] According to some scholarly research, the species is actively expanding its range and colonizing the south-eastern coast of Spain.

[4] The species lives on sandy and seagrass beds in shallow waters and up to depths of 52 meters.

[5] Reproduction success depends on environmental factors, primarily availability of daylight and water temperature – other likely factors include abundance of food, tidal flow and water salinity.