Shrimp is highly susceptible to quality degradation, particularly during handling on sondong fishing vessels in the Banyuasin waters. Flake ice, as a coolant, has limitations such as rapid melting and nutrient loss, which can compromise freshness. Waste oil from blue swimming crabs (Portunus pelagicus) has potential as a raw material for organic Bio-PCM (Phase Change Material) to maintain shrim…