🔊 A fascinating article on how whales and dolphins now yell in order to be heard over ship traffic:
Long-finned pilot whales navigating busy shipping routes are having to yell when communicating with other members of the pod… However, this was only noticeable for two types of calls: high-frequency and short-pulsed calls. Dolphins appear unable to increase their volume when producing low-frequency and two-component calls, which, according to the researchers, are the most important for locating other pod members after a dive. Essentially, they were already shouting as loudly as they could.