biologist: A scientist involved in the study of living things.
blowhole: (in biology) Nostrils on the top of the head of a cetacean (whale, porpoise or dolphin) through which the animal breathes. Toothed whales (like orcas) have one, baleen whales, such as right whales, have a pair.
colleague: Someone who works with another; a co-worker or team member.
dolphins: A highly intelligent group of marine mammals that belong to the toothed-whale family. Members of this group include orcas (killer whales), pilot whales and bottlenose dolphins.
echolocation: (in animals) A behavior in which animals emit calls and then listen to the echoes that bounce back off of solid things in the environment. This behavior can be used to navigate and to find food or mates. It is the biological analog of the sonar used by submarines.
frequency: The number of times some periodic phenomenon occurs within a specified time interval. (In physics) The number of wavelengths that occurs over a particular interval of time.
killer whale: A dolphin species (Orcinus orca) whose name means whale killer. These animals belong to the order of marine mammals known as Cetacea (or cetaceans).
muscle: A type of tissue used to produce movement by contracting its cells, known as muscle fibers. Muscle is rich in protein, which is why predatory species seek prey containing lots of this tissue.
nasal: Having to do with the nose.
navigate: To find one’s way through a landscape using visual cues, sensory information (like scents), magnetic information (like an internal compass) or other techniques.
noise pollution: Harmful or annoying levels of noise. Too much traffic and other human-caused noises can make animals nearby change their behaviors — or even make them leave. Harmful levels of noise can also cause permanent damage to human hearing.
orca: The largest species of dolphin. The name of this black-and-white marine mammal, Orcinus orca, means killer whale.
peer: (verb)Â To look into something, searching for…
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