External gills usually contains muscle tissue, and may be moved by the animal as a free appendage, in order to stir up stagnant water. The stalk is lined by many thinly walled filaments (fimbriae), containing the majority of blood vessels used in gas exchange. Animals usually have one external gill originating on each gill arch (except the hyoid), which leads to there being three pairs of external gills in salamanders, and four in the gilled larvae of lungfish. External gills External gills are the gills of an animal, most typically an amphibian, that are exposed to the environment, rather than set inside
Pint of Science offering multiple stages across each city that allow leading experts in various scientific fields to present, discuss and take questions on their latest discoveries and research with members of the public. The events aim to have an interactive element, for example involving a range of robots. The Cambridge, UK Pint of Science team started 'Creative Reactions' - a collaboration between artists and Pint of Science scientists to produce artworks related to the science presented at the talks. They matched artists with their 50 speakers in Pint of Science Cambridge. The artists create a unique piece of art based on their