Regenerative capacity and biochemical composition of the sea star Luidia clathrata (Say) (Echinodermata: Asteroidea) under conditions of near-future ocean acidification

► Luidia clathrata maintained for 97 days grew faster than reported field rates. ► Near-future OA conditions had no effect on rate or length of regenerated arms. ► OA didn't affect the protein, carbohydrate, lipid, and ash of body components. ► Behavioral patterns didn't reveal increased stress from low pH during regeneration.