you see the mud circle? It is the muddy area on the water's surface
left by a
whale that is "snacking." Whales feed by gulping mouthfuls of sand
and sediment from the bottom and squirting it out through their baleen.
food gets trapped and swallowed.
The bottom sediment of the nursery lagoons in Mexico has
very little whale food. However, the water is rich in plankton and algae.
One type of algae is like cotton in texture. Scientist Dr. Swartz suggests
this algae gets stuck on the whales' baleen, so maybe they are taking mouthfuls
and sediment to clean their baleen. The mud circle rises as they squirt out the mouthful of sediment. —Caroline Armon, Guide/Naturalist
Courtesy of Caroline Armon
Copyright 1997-2017 Journey North (www.learner.org/jnorth). All Rights Reserved. Search