NOT KNOWN FACTS ABOUT RIDDLE

Q: My pores and skin is environmentally friendly and slippery, I have four legs and webbed toes, I hop on land and swim underwater, I like bugs and minimal fish to consume. What am I?Dilemma: The ages of a mom and his daughter insert around 55. If you reverse the digits of your mom's age, you will get the daughter's age. How previous are they?c) A