Despite their common name of "sea cucumber," holothurians are not vegetables that turn into pickles when submerged in vinegar...but given their important role in the ocean ecosystem in terms of cycling nutrients, we love these marine animals just the same! Happy #NationalPickleDay! [Video: A tale of two cukes — sea cukes, that is! One sea cucumber gracefully swims through the water column. The other? Just chilling on the seafloor. Seen in the Gulf of Mexico.] | NOAA Ocean Exploration