An unidentified earplug from your Countrywide Museum of Purely natural History collection. The light and dark layers come from a Construct up of keratin and lipids and may be used to estimate whale age. (Megan Chen, NMNH) Baleen whales focus on hearing low-frequency sounds for prolonged-distance communication. In all whales, https://minere950bbb6.mywikiparty.com/user