The Peach Blossom Jellyfish (Craspedacusta sowerbii) is native to China and an invasive species in Canada.
(Florian Lüskow)
The Peach Blossom Jellyfish is an invasive species in Canada, and a lack of data is hampering efforts to control populations.
In seven years, the lanternfly has spread from Berks County, northwest of Philadelphia, to large areas of Pennsylvania and New Jersey, and both south and north.
Penn State/E. Swackhamer
The spotted lanternfly, native to Asia, is spreading fast since arriving in the United States seven years ago. An entomologist explains why this is a big problem.
A Small Tree Finch from the Galápagos Islands with an enlarged nostril caused by a parasite.
Katharina J Peters
An infestation as a chick leads to enlarged nostrils in the beak of Darwin finches, and that affects their mating call.
The mesquite tree was introduced into South Africa to aid farmers and local communities. It is now invasive in most parts of the country.
Shutterstock
The invasive mesquite tree has a negative impact on everything from biodiversity to human health. Management programmes are crucial.
Eucalyptus trees in plantations are particularly vulnerable to pests.
MJ Wingfield
Invasive pests threaten the world’s much-needed planted forests, as trees are declining.
Male gobies are like peacocks. This is the Edgbaston Goby.
Adam Kereszy
Gobies are one of the largest and most widespread fish families in the world, but even so, the presence of endemic species in the Great Artesian Basin spring complexes of central Australia is a little…