Here is a list of eight of the world's rarest animals. This critically endangered porpoise, found only in the Gulf of California, has fewer than 30 individuals remaining, making it the rarest marine ...

This octopus has never been captured ... rare piece of footage and photography of that creature." The list of new and rare species in this region grows with every expedition.

This story ran in the April 2016 issue of National Geographic magazine. In most octopus species it’s customary after sex for the female to make a meal—of her partner. To avoid being eaten ...

This octopus species lives in open water in Earth’s ... and billfishes but still described as of least concern on the IUCN Red List of Threatened Species.

It includes anywhere that is more than 7,000 metres below the surface. It's possible different species of Dumbo octopus could occupy different depth ranges. Dumbo octopuses are well-adapted to the ...

Some take a while to warm up to our staff, others form an immediate bond.” The most common species of octopus in Hawaii and around Maui is the day octopus, or Octopus cyanea. There is one housed ...