Dec 28

This weeks A-Z blog has been inspired by a couple of recent school visits where the classes were looking specifically at endangered species and the responsibilities humans have to the environment. As the aim of ARKive is to raise awareness of threatened species worldwide it seems particularly fitting for the ‘E’ edition of A-Z to be endangered-themed, so please join me on my exploration of the endangered species of ARKive.

Photo of southern bluefin tuna swimming next to fish farm net

Southern bluefin tuna are endangered due to overfishing

Life on the EDGE

We work closely with lots of other global conservation organisations including our friends at the EDGE of Existence programme, who are working to promote and conserve the most Evolutionarily Distinct and Globally Endangered species. They are the only global conservation initiative to focus specifically on threatened species that represent a significant amount of unique evolutionary history, including weird and wonderful creatures such as the purple frog, the platypus and the shoebill.

Photo of Shoebill showing detail of head

The shoebill is a potential EDGE species

See where the golden-rumped sengi, pygmy three-toed sloth and Chinese giant salamander come on the blog of ARKive’s Top 10 EDGE species.


The word that strikes fear into the hearts of all conservationists, which is hardly surprising considering that at present it is believed that 1/4 of all mammals and 1/3 of amphibians are at risk of extinction. It might sound rather odd but there are actually varying degrees of ‘extinct’ according to the IUCN Red List. Species can either be Extinct in the Wild (EW), which means the only remaining populations are captive, such as the scimitar-horned oryx, or Extinct (EX), such as the golden toad which was last seen alive in 1989.

Photo of a male golden toad

The golden toad is classed as Extinct (EX)


Ethiopian wolf

Living high in the Bale Mountains of Ethiopia this wolf is the most threatened canid in the world. Human encroachment on their habitat and its subsequent conversion to agricultural land is reducing their available habitat. With humans come their dogs, which carry diseases such as rabies and canine distemper to which the Ethiopian wolves have no resistance.

Photo of the Ethiopian wolf hunting

The Ethiopian wolf is the most endangered canid in the world



The South American country of Ecuador, nestled between Colombia, Peru and the Pacific Ocean, is host to a huge variety of species including the giant otter, the boto and the giant antpitta many of which are endangered. The Galapagos Islands are also part of Ecuador which means much of the Ecuadorian biodiversity is endemic. Species from the Galapagos, such as the Galapagos marine iguana, face a plethora of threats including the introduction of domestic pets, marine pollution and the effects of environmental fluctuations such as El Nino.

Photo of a male Galapagos marine iguana

The Galapagos marine iguana faces a number of threats


Watch out for our new Endangered Species education module and activity coming soon to our education pages. For more information why not check out our Endangered Species page.

What is your favourite ARKive E?  Perhaps you’re a fan of elephants or the echidna, how about the eastern sandfish or the earthworm? Let us know…

Laura Sutherland, ARKive Education Officer