Estimated predation rate of the stalked bourgueticrinid (Crinoidea) Democrinus from Roatán, Honduras

Crinoids have the ability to regenerate their crowns when arms are autotomized or bitten off by predators. The evidence of predation is visible in many populations of crinoids, including the deep water stalked crinoid Democrinus off the coast of Roatan, Honduras. Throughout the videos taken in a submersible, many individuals displayed arms that are significantly shorter relative to their stalk lengths than the full-grown adults in the area,...