attention: The phenomenon of focusing mental resources on a specific object or event.
audio: Having to do with sound.
average: (in science) A term for the arithmetic mean, which is the sum of a group of numbers that is then divided by the size of the group.
behavior: The way something, often a person or other organism, acts towards others, or conducts itself.
biologist: A scientist involved in the study of living things.
bottlenose dolphin: A common species of dolphin (Tursiops truncate), which belongs to the order Cetacea among marine mammals. These dolphins are found all over the world.
colleague: Someone who works with another; a co-worker or team member.
develop: To emerge or to make come into being, either naturally or through human intervention, such as by manufacturing.
echo: To bounce back. For example, sound bouncing off walls of a tunnel, and returning to their source. Radio waves emitted above the surface can also bounce off the bedrock underneath an ice sheet — then return to the surface.  Or ideas or events that seem to reflect one or more others, as a reverberating sound might.
marine biologist: A scientist who studies creatures that live in ocean water, from bacteria and shellfish to kelp and whales.
marine mammal: Any of many types of mammals that spend most of its life in the ocean environment. These include whales and dolphins, walruses and sea lions, seals and sea otters, manatees and dugongs — even polar bears.
pitch: (in acoustics) The word musicians use for sound frequency. It describes how high or low a sound is, which will be determined by the vibrations that created that sound.
population: (in biology) A group of individuals (belonging to the same species) that lives in a given area.
Proceedings of the National Academy of Sciences: A prestigious journal publishing original scientific research, begun in 1914. The journal’s content spans the biological, physical and social sciences. Each of the more than 3,000 papers it publishes each year,…
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