If you've ever been on a ship or ferry in the open sea, you might have spotted dolphins swimming alongside.
如果你曾在乘船出海，你或许见过船的边上有海豚游泳。
英语百科
Spotted dolphin
Spotted dolphin refers to either one of two closely related dolphin species, being:
While the pantropical spotted dolphin can be found around the world's oceans where a tropical or subtropical climate exists, the Atlantic spotted dolphin can only be found in the Atlantic Ocean.