Lionfish, native to the Indo-Pacific, is characterized by conspicuous warning coloration and venomous spiky fin rays.

Stung divers needed for Lionfish Pain Survey

The two Canadian universities are currently collaborating on the world's first large-scale study of lionfish stings. At present, there is no scientific data that has been collected on a broad scale, as to what happens to a human after they have been stung by a lionfish. 

Subject Criteria

Been stung? The scientists would like to collect the pain and symptoms you experienced after you were stung.  

Narwhals in dense pack ice
Narwhals in dense pack ice

Narwhal's tusk tells on its feeding habits, and more

Using mercury and stable isotopes of carbon and nitrogen to obtain such information, the team were able to also analyse how the ice cover and the impact of potential toxic compounds have evolved over time.

Their findings were published in the Current Biology journal.

The tusks of the ten narwhals involved in the research were 150 to 248 cm long, and contained data from the time period 1962 to 2010.