It's bigger than a T. rex, and yes, the head has "fish-eating" written all over it, but really the entire skeleton has "water-loving" written all over it -- dense bone, paddle-like feet, and the hind limbs are reduced in size, and again, this is something we see in animals that spend a substantial amount of time in the water.
它比之前发现的雷克斯暴龙还要大， 没错，棘龙的头就是为了 捕鱼而设计的， 但是实际上棘龙的全身都 透露着“亲水型”的设计—— 紧致的骨骼、蹼状的足、 相对短小的后足， 同样的，这些特征都让我们相信 只有长期呆在水里的动物 才会有这些身体构造。