有什么好笑的？(What's so funny?)

海豹是一种神奇的水生哺乳动物，它们已经进化到生活在水中。它们的特点是有蹼的脚，光滑的鱼雷状身体，以及在寒冷的水中保持温暖的鲸脂覆盖物。 海豹可以长时间屏住呼吸 可以潜到相当深的地方寻找食物，使它们成为出色的潜水员。它们有各种大小和颜色，从北极到热带，在地球上随处可见。海豹作为大型捕食者的猎物，协助控制鱼类和其他海洋动物种群，对生态系统的健康做出了重大贡献。
原文：
Seals are amazing aquatic mammals that have evolved to live in the water. They are distinguished by their webbed feet, sleek, torpedo-shaped bodies, and blubber covering that keeps them warm in chilly waters. Seals can hold their breath for long periods of time and can dive to considerable depths in search of food, making them superb divers. They occur in a range of sizes and colours and can be found all over the planet, from the arctic to the tropics. Seals contribute significantly to the health of their ecosystems by acting as prey for larger predators and assisting in the control of fish and other marine animal populations.
《© Henley Spiers/Minden Pictures》