Sea biscuits, while ancient, are not entirely relegated to the fossil record. Some species of sea biscuits still exist today, though they are often found in specific marine environments. By investigating the survival and rarity of sea biscuits, we can understand the factors that have influenced their persistence and adaptation over millions of years. Discover the modern relatives of these ancient echinoderms and the habitats they occupy. Embrace the continued existence of sea biscuits and the remarkable story of their survival through time.