The week in wildlife

Man-of-war jellyfish off the coast of Spain. Potentially lethal Portuguese men-of-war have been seen off Mediterranean beaches, making an unusual incursion into waters normally considered too warm for them Photograph: Enrique Talledo

Young olive baboons Photograph: Theo Allofs/Corbis

A raccoon peers out from a tree Photograph: Amy Sancetta/AP

Feeding time for young robins Photograph: Ron Edmonds/AP

Wild boar piglets in the Forest of Dean Photograph: Les Gibbon /Hull News

An emu chick follows the legs of its father in Berlin zoo Photograph: Maya Hitij/AP

A cockchafer beetle, colloquially known as the may bug. Once a serious pest for agriculture and forestry, the beetle was nearly wiped out during the 20th century. Their presence is a sign of low-pollution levels as they do not tolerate pollution well Photograph: Wolfgang Kumm/guardian.co.uk

Giant soft-shelled turtles are a delicacy in some parts of China but authorities are cracking down on illegal trafficking of wild animals Photograph: Rex Features

A spectacular display of dolphins in the sea off Indonesia Photograph: Adek Berry/AFP/Getty Images

Two rare peninsular pronghorns, the second fastest animal on Earth, go on show at Los Angeles zoo. Only 250 of the pronghorns are believed to live in the wild in western and central North America Photograph: David McNew/Getty Images

A dandelion blooms in South Korea. The common plant is perfect for a green salad Photograph: Jeon Heon-kyun/EPA

Newborn ducklings are coaxed into the water by their parents Photograph: Paul Hanna/REUTERS

Brown bears in an Athens zoo Photograph: Orestis Panagiotou/EPA

A newly hatched butterfly lands next to a chrysalis in the new Butterfly Jungle at the Natural History Museum in London, which opens today Photograph: Oli Scarff/Getty Images

Camber windfarm in Kent forms the backdrop for gazing cows Photograph: Haydn West/Rex Features

Convict cichlid fish. Native to South America, the species has been introduced to Mexico, USA, Japan and Australia Photograph: Barbara Ostrowska/EPA

African penguins wait to be hand fed as part of their rehabilitation process at the Southern African Foundation for the Conservation of Coast Birds (SANCCOB) in Cape Town, South Africa. After an unidentified oil spill, 129 oiled African penguins were rescued from the islands along the southern Namibian coastline Photograph: Nic Bothma/EPA

Apple blossom flowers on an apple tree in Hoxne, Suffolk Photograph: Graham Turner