Most Endangered Animal In The World 2024 Usa. These porpoises swim in the gulf of california and were only discovered in 1958, according to the world wildlife fund. The vaquita is the rarest animal in the world and the rarest marine mammal.

During a few weeks each year or so, an international team of scientists spends long days at sea searching for the most endangered marine mammal on earth: An rli value of 1.0 equates to all species qualifying as least concern (i.e., not expected to.