Billede Tilskrivelser:

ethan (https://www.flickr.com/photos/56833981@N00/260912724/) - PaulEisenberg - Licens: Attribution (http://creativecommons.org/licenses/by/2.0/)

page 214 Nervous System (https://www.flickr.com/photos/perpetualplum/3974877876/) - perpetualplum - Licens: Attribution (http://creativecommons.org/licenses/by/2.0/)

CAST Fishing Event (https://www.flickr.com/photos/usfwspacific/9465809875/) - USFWS Pacific - Licens: Attribution (http://creativecommons.org/licenses/by/2.0/)

Which one? (https://www.flickr.com/photos/usfwspacific/9468601054/) - USFWS Pacific - Licens: Attribution (http://creativecommons.org/licenses/by/2.0/)