Dolphins can recognize some colors and their pupils can adjust to light and dark changes in their environment. Dolphins have a well-developed sense of hearing and navigate their environments through echolocation . Dolphins have very sensitive skin, which is easily damaged but also heals quickly. Pacific whitesided dolphins are known to consume hake, anchovies, squid, and sardines. Pacific whitesided dolphins mate during the late summer and early fall.
Female dolphins can bear a calf every two years but generally give birth every three years.
No one really knows the average life span of a Pacific whitesided dolphin however, it is believed to be anywhere between 36 and 40 years. Pacific whitesided dolphins are sometimes preyed upon by killer whales , are caught incidentally in drift nets and gill-nets, and some countries harvest them for food. Books and the world wide web are excellent places to learn more about marine mammals. Books Leatherwood, Stephen. Reeves, Randall R. Foster, Larry.