Before revision: Similarly, it is accepted that the common bottlenose dolphin has two ecotypes in the western North Atlantic .
After revision: In 2022, the common bottlenose dolphin (Tursiops truncatus), which was considered to have, was separated into two species based on morphometric and genetic data by Costa et al., with what was previously considered to be the near-shore ecotype becoming Tursiops erebennus two ecotypes in the western North Atlantic .