Hammerhead

Come learn about the heads of hammerhead sharks and find out why a fish would hold their breath underwater. Bibliography: https://docs.google.com/document/d/1exsssJqR0O0mj0xxNkNhwU1hTlwsdV2FAWGPJ1aLPtc/edit?usp=sharing Here is the affiliate link for my new audio course, "Human Evolution," first episode is free: https://frstre.com/go/?a=95595-7e38d9&s=1771291-5cf1d5&p_affiliate.referral_code=mackenmurphy I get 30% of your subscription if you subscribe through this link, your support is greatly appreciated! Also, you get 30% off when you use the promo code: mackenmurphy