translation.en: In normal life for mother and calf dolphin, they'll often drift apart or swim apart if Mom is chasing a fish, and when they separate they have to get back together again.
translation.zh: 在海豚妈妈和海豚幼仔平常的生活中， 如果海豚妈妈去抓鱼，他们常由于漂移或是游泳而分开。 而当它们分开时 它们不得不重新聚在一起。