The photos on this site are not posted for profit.  You are free to make use of any of them for non-commercial purposes according to the terms of the Creative Commons BY-NC-ND 4.0 license.  See below for terms of use.

Full resolution, watermark-free images are available for a $25 processing fee.

For K-12 students, this means that you may use any of these images in your school work, provided you cite the source.  If you happen to be one my students, there may be a small bonus mark for appropriately including one of my images in a school assignment.