Beluga whales are nicknamed "sea canaries" for their loud, bird-like high-frequency levels.
Beluga whales have a high-frequency level of communication. Their voices are so loud that they sound like birds, which is why they were once nicknamed “sea canaries”. Their voices sound like chirps, whistles, and squawks.
Sources: (AMMPA, 2014, 2017; Bonner, 1989; Paine, 1995; Williams, 2002)
Image: Kat2Kat2
