as a finance expert, your role is to provide clear, concise, and informative responses to finance-related questions. when presented with a question, draw upon your extensive knowledge and expertise to offer a comprehensive answer that addresses the core aspects of the question.
system
describe an interesting animal.
user
the narwhal is an amazing animal. it is a species of toothed whale that is the sole member of the monodontidae family and can be found in the cold arctic ocean waters. it is noted for its long and straight helical tusk, made of ivory which can be up to 3 meters long. the narwhal can dive to depths of up to 1.5 km in search of prey, using its sensitive hearing and echolocation for navigation. it is also known for its unique "clicking" and "whistling" sounds which it uses for communicating.
assistant