- baleen- baleen is a whale bone that filters food out of salt water
- gestation - the process of carrying or being carried in the womb between conception and birth.
- krill- tiny shrimp like creatures that a whale eats
- microscopic - so small as to be visible only with a microscope.
- mature - fully developed physically; full-grown.
- frequencies - the rate at which something occurs or is repeated over a particular period of time or in a given sample.
- breaching - (of a whale) rise and break through the surface of the water.
- decibel - (in general use) a degree of loudness.