english Dolphins are mammals that live in the ocean.mammals are different than fish, reptiles or birds. as a mammal, dolphins oxygen, even though they live in water. because they are mammals, a dolphin mother gives birth to a live baby, unlike reptiles and birds who lay eggs. a dolphin mother also feeds her baby milk like other mammals. write the main idea of the paragraph in your own words.___________________. write two supporting ideas for the main idea. 1.________________________. 2._______________________.​