Though we can’t hear them, blue whales are one of the loudest animals on the planet, communicating with each other using a series of low frequency pulses, groans, and moans. It is thought that in good conditions blue whales can hear each other across distances of up to 1,600km. Happy World Whale Day Day-2 #worldwhaleday #defendmarinemammals #savewhales #saveocean #saveoceanlife #doodle #illustration #penandink #dailysketch #day2 https://www.instagram.com/p/Bt_kxOVAO75/?utm_source=ig_tumblr_share&igshid=927xcsfxecsu












