an echiodern is an animal that is an invertabrate that has spikey or soft skin.
An echinoderm is an invertebrate marine animal such as star fishes and sea urchins.
Echinoderms like sea stars are adapted for catching food from any direction due to their radial symmetry, which allows their arms to extend in multiple directions. This anatomical feature enables them to efficiently capture prey, such as bivalves, regardless of where they are located. Additionally, their tube feet, equipped with suckers, provide a versatile method for grasping and manipulating food items from various angles. This adaptability enhances their foraging effectiveness in diverse marine environments.