Dolphins’ Amazing Abilities
① Dolphins have a number of abilities/which other aquatic animals do not have. ② For example,/they can swim very fast/— around 40 kilometers an hour! ③ They can dive very deep under the sea/without suffering from changes in water pressure. ④ Their sense of hearing is much sharper/than that of humans. ⑤ They send out high-frequency sound waves/to find out what objects are in the water. ⑥ In addition,/they communicate by sound/and warn each other/when danger is near. ⑦ Because of these abilities,/many scientists are interested in studying dolphins.
① Dolphins have a number of abilities/which other aquatic animals do not have. ② For example,/they can swim very fast/— around 40 kilometers an hour! ③ They can dive very deep under the sea/without suffering from changes in water pressure. ④ Their sense of hearing is much sharper/than that of humans. ⑤ They send out high-frequency sound waves/to find out what objects are in the water. ⑥ In addition,/they communicate by sound/and warn each other/when danger is near. ⑦ Because of these abilities,/many scientists are interested in studying dolphins.