Week in wildlife in pictures: a very lost penguin, cloned baby lemurs and a mystery mollusc

A male emperor penguin, named Gus, stands on a scale after being discovered on a beach near the town of Denmark in southwestern Australia, thousands of kilometres from his home on Antarctica. An emperor penguin has never been reported in Australia before, and this is possibly the furthest north that the species has ever been seen

A well-camouflaged spotted owlet looks out from a tree in a public park in Bangkok, Thailand

A sea slug floats off the coast of the city of Batroun in northern Lebanon. The colourful nudibranches are native to the Indian ocean, but are believed to have escaped through the Suez canal into the Mediterranean, where they were first spotted in 2004

Named Red Cloud and Sibert, these are the three-week-old babies of a black-footed ferret named Antonia at Smithsonian’s National Zoo and Conservation Biology Institute in Front Royal, Virginia, US – who is herself a clone. She is the first-ever cloned animal of an endangered species in the US to successfully produce offspring. Her twin babies are developing normally, but will never be released into the wild

An Anatolian leopard is caught by a camera trap set up in Ankara, Turkey. It’s thought there are fewer than 1,100 adult leopards left in the region

The still surface of the pond offers an almost perfect reflection of a bird in Aberystwyth, Wales, UK

A new species of nudibranch nicknamed the “mystery mollusc” has been discovered by researchers in California, US, in the Pacific’s deep-sea midnight zone. Researchers at the Monterey Bay Aquarium Research Institute found it at 8,576ft deep and spent years documenting the sea slug

A young elephant calf follows its mother across a dirt road at the Ngutuni Wildlife Conservancy in southern Kenya. Elephant conservation in the region has been a success: numbers in nearby Tsavo National Park have risen from about 6,000 in the mid-1990s to almost 15,000 elephants

Crows perch on a female red deer in Richmond Park in London, UK

A great egret flies over Kızılırmak delta in Samsun, Turkey

Elk run and play on the red suaeda (seepweed) in wetlands on China’s east coast

A central American agouti (related to the guinea pig, but larger) wanders through Metropolitan Natural Park, a protected area in Panama City, Panama

A resident pelican makes itself as round as possible in St James’s Park, London, UK

A Javan slow loris being looked after at the Mount Kendeng national park resort management area in Sukabumi, Java, Indonesia. Ten of the primates have been translocated there as part of a project to safeguard this critically endangered species

Long-tailed tits test the water at a pond near Csobánka, Hungary

Members of the Rhino Repro team check the vital statistics of five-year-old Mia after she was tranquillised during an “ovary pick-up procedure” at a sanctuary near Pretoria, South Africa. The procedure collects eggs from the female rhino for IVF. Rhino Repro aims to improve the reproductive rate of critically endangered wildlife species

A flock of birds flies at sunrise over Hongze Lake wetland reserve in Suqian, China

A young eared grebe eats a pipefish it hunted at a port in Atakum district of Samsun, Turkey