The authors add that " dall 's porpoises are known to be mating with harbor porpoises off the coast of british columbia , and seal hybrids have been identified in museum specimens and in the wild . "

该篇报道的作者们还补充说，“人们已经发现了白腰鼠海豚会在不列颠哥伦比亚沿海与钝吻海豚交配，而海豹的杂交后代也已在博物馆标本和自然环境中被识别。”