Sacculina

The story revolves around Jim and his recently released brother Jack, who embark on a fishing trip to celebrate Jack's freedom, accompanied by their troubled father and Jack's intimidating friend. As they venture into the ocean, they encounter terrifying mutant creatures that threaten their lives. The brothers and their companions must confront their fears and work together to fend off the relentless attack, resorting to increasingly desperate and lethal tactics to survive and find a way back to safety.