It forms a protective mantle against the cold, 它形成了抵御寒冷的保护性掩体
In fact they're spots at the end of it's mantle. A bite there, would leave the head unscathed. 实际上这些发光的触手末端用来吸引掠食者攻击 从而保护头部不受伤害
Perhaps this extraordinary pulsation of the clam's fleshy mantle 蛤的肉质外壳的这种非常特别的规律性闪电