Certain sea animals have defensive devices that help them to survive. Sea urchins, for example, grow spines to protect themselves. The sea awesome and jellyfish have poisonous tentacles, which are used for attack and defense.
海洋动
有防御的装置来帮助他们生存。例如海胆,生长脊椎来保护它们自己。可怕的水母有有
的触须,用来攻击敌人和保护自己。