As the seat of Miami-Dade County, the municipality is the principal, central, and most populous of its metropolitan area and part of the second-most populous metropolis in the southeastern United States.
porpoise (plural porpoises) A small cetacean of the family Phocoenidae, related to whales and dolphins. (Canada, US, imprecisely) Any small dolphin. Synonyms . garfish, mereswine, sea hog, sea pig, seaswine; Translations
Porpoise is one of the closest relatives of dolphins, apart from whales. Without knowing the differences between these two important marine mammals, many would find it difficult to identify who is who. This article intends to clear all those difficulties by discussing the difference between dolphin and porpoise. Dolphin. Dolphins belong to the Family: Delphinidae, the largest group of marine mammals. Compared to other cetaceans, dolphins are a new group that originated only 10 million years ago.