AN UNBIASED VIEW OF TOON ME A RIDDLE

Q: My pores and skin is eco-friendly and slippery, I have four legs and webbed ft, I hop on land and swim underwater, I really like bugs and small fish to take in. What am I?138. I come in many alternative hues and I get bigger Once i’m total. I'll float away for those who don’t tie me down and I could make a loud audio if I break. What am I?In