The complex biological engineering behind the sea star's body plan

Nature · Published 29 October 2026 Swipe more like this →

In short: This 1987 documentary explores the sophisticated anatomy of echinoderms. It reveals how these marine organisms have evolved specialized body structures to master the fundamental requirements of life underwater.

The film examines the specific evolutionary adaptations of echinoderms, focusing on how their unique body plans facilitate four core biological functions: locomotion, respiration, digestion, and reproduction.

By analyzing these systems, the documentary provides a window into the specialized mechanics that allow sea stars and their relatives to thrive in diverse marine environments.

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