cf Corallium sp. >> https://nmssanctuaries.blob.core.windows.net/sanctuaries-prod/media/docs/sur-ridge-field-guide.pdf
Precious coral or red coral is the common name given to Corallium rubrum and several related species of marine coral. The distinguishing characteristic of precious corals is their durable and intensely colored red or pink-orange skeleton, which is used for making jewelery.