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Biology

  • Wikimedia Commons Copyright-free images
  • Creative Commons Copyright-free images
  • PNAS Online (the Proceedings of the National Academy of Sciences) has high resolution images if you click on the "Figures & SI" tab. Do not click on the PDF link. PNAS has images of higher quality and greater credibility than any you will typically find via the Internet search engines. Permission automatically granted for educational purposes.
  • Nature has some beautiful images for posters
  • USGS Multimedia Gallery (United States Geological Survey)
  • Science has a wealth of high resolution images
  • Google’s Advanced Image Search: For Size, select Large. For Usage Rights, select “free to use.”
    Reverse image search: Use Google's image search to find the origin or larger version of an image
    In the search box, click the camera icon to search by an image’s URL or to upload an image from your computer
  • Wildflower Center
  • CalPhotos:Animals (part of the Berkeley Digital Library Project)
  • Prints and Photographs Reading Room (Library of Congress), most are free to use for educational purposes
  • You can link to images without violating copyright laws, but if you save a copy of an image (or use it in a paper, poster, or slideshow), you will have to determine if copyright permission needs to be requested. Many publishers and websites will have a blanket statement about whether their images are copyright-free or require permission.
  • In APA, cite online images the way you would cite a web document:
    • Mendes, E. (2012, December 5). In U.S., more cite obesity as most urgent health problem [Graphs]. Retrieved from http://www.gallup.com/poll/159083/cite-obesity-urgent-health-problem.aspx
  • Most images (photos, charts, graphs, and maps) in professional journal articles are created by the author(s) of the article.
  • The most common way to cite an image from another source is to put the source information in the caption:

Nymphaea sp. (Nymphaeaceae), by Luis Mata/Dingilingi

Figure 2. “Nymphaea sp. (Nymphaeaceae), Borneo (Lambir Hills National Park, Sarawak, Malaysia),” by Luis Mata/Dingilingi. Retrieved 2021 from the Flickr website, https://www.flickr.com/photos/31722525@N05/7378069090. Licensed under CC BY-NC-SA 2.0

 

(adapted from CalPhotos)

Fair Use

In general, Fair Use means that a small thumbnail photo that you find on a website can be downloaded and saved for personal or educational use without asking permission first or paying a licensing fee. The exact size of the thumbnail has not been described in the law as far as we know, but for our purposes, a thumbnail is an image that is 194x130 pixels in size or smaller. Fair Use does not apply to images that are larger than a thumbnail or to any text information that goes with the photo. Fair Use also does not apply to commercial use or to any use that might affect the value of or the market for the original photo. If you are in doubt as to whether your use would be considered Fair Use, please check with the person or organization that contributed the photo. Please note that Fair Use is a moving target because of changes in how the law is interpreted.

Copyright

Copyright is different than plagiarism, but both involve academic honesty. If you want to reproduce the image in a research paper, PowerPoint presentation, or a poster, find the copyright instructions for the individual journal and/or database (or website). Frequently you can just do a search for the word copyright or the word permission, using the Find (Ctrl+F) command. Some journals will give immediate permission to use the images for educational purposes, provided the source is credited properly. Others require you to contact the author and/or publisher; generally contact information is provided, and replies to copyright requests are speedy. Contact the library for assistance if needed.

Thumbnails

Thumbnail photos are small photos that often appear in the "browse" pages when you do a search, and at the top of each photo's "detail" page. For our purposes, a thumbnail is an image that is 194x130 pixels in size or smaller. Thumbnails can be used without prior permission under the Fair Use provisions of the Copyright Law of the United States as long as you include the proper credit for the photo (check the photo's detail page for wording). Please see below for an explanation of what constitutes Fair Use. Briefly, it applies to personal, academic, and other educational uses. If your use is not within the provisions of Fair Use, you may still be able to use the thumbnails, but you may need to request permission from the person or organization that contributed the photo. See How can I contact the photographer who took this photo?) for more information about obtaining usage and contact information.

Using Larger Images

Fair Use does not cover images that are larger than the thumbnail size, i.e. larger than 194x130 pixels. To use such photos, you will need to request permission first from the person or organization that contributed the photo. Some contributors allow some kinds of uses without advanced permission but you must verify this first. To find out whether you need permission, check the usage information at the top of the enlargement for the photo you are interested in. You can also find usage information on the photographer's "bio" page (click on the photographer's name on the detail page.)

This applies to downloading and saving the image on your own computer, as well as including a link on your web page that results in the image being displayed on your page.

If you wish to use the photo for a publication or some other commercial use, you'll need contact information. Contact the library for assistance if needed. In some cases you may need to pay a licensing fee or reproduction expenses to use the image. Or, you may be able to order a slide or a higher resolution version of the photo.

Example 1 (APA citation style, footnote with source provided)

The caption of this image includes a footnote used to cite the image. The footnote is below the image here.

   Pertussis, by J. L. Carson
Figure 1. B. pertussis by
J. L. Carson, 2003. Used
with permission.¹

¹ From “Three genomes and whooping cough,” by E. R. Winstead, 2003, Genome News Network . Copyright 2000–2004 by the J. Craig Venter Institute.  Reproduced with permission of the photographer. Available at http://www.genomenewsnetwork.org/articles/09_03/ whooping_cough.php

Shown directly below is a citation for the image if you include it in your References, but APA style does not require you to do so.
 References
Carson, J. L. (2003). “B. pertussis.” [Online image] In Three genomes and whooping cough, Genome News Network. Rockville Maryland: J. Craig Venter Institute. Retrieved from http://www.genomenewsnetwork.org/articles/09_03/ whooping_cough.php
Give the address of the page on which the image appeared rather than the address of the image to assist retrieval of the image at a later date.

Example 2 (APA, source information provided in caption below image, URL is stable)

Figure 3. “A leopard frog in the wetlands,” by Rachel Harrington. Retrieved from the USGS Multimedia Gallery website, https://www.usgs.gov/media/images/leopard-frog-wetlands

Example 3 (APA citation style, image used on a student's webpage or online article)

This image is hyperlinked to the article in which it appeared. This method would be appropriate for student work that is published on the Web.

development of male antennae of the wild silkmoth, from https://www.pnas.org/content/pnas/102/39/14075.full.pdf
Figure 5. The development of male antennae of the wild silkmoth.
Used with permission, © 2005 PNAS.