1. marine animals of the class Holothuroidea; sea cucumbers
Usage: zoological term; plural form

Examples

• Holothurians are found in oceans worldwide, from shallow waters to deep sea trenches.
• The marine biologist studied various holothurians during her research expedition.
• Some holothurians can regenerate lost body parts when threatened by predators.
• Commercial fishing of certain holothurians has increased due to their culinary value in Asian markets.
• Holothurians play an important role in marine ecosystems by processing sediment on the ocean floor.
• The aquarium’s invertebrate exhibit featured several species of colorful holothurians.