If you are looking for high quality biological images or clip art, go to some of my favorite links. I am also including personal galleries of images I have created for various projects.
Midjourney – AI generated art for any project
Internetclipart.com – this is a great site for animal photos
Freepik – vectors, clipart, and photos for any project
Clker.com – lots of clipart, many science related
Clipart ETC – Florida institute of instructional technology, drawings for projects
PngTree – icons and clipart, limited downloads unless you have a subscription
Arthur’s Clip Art – takes some sorting, but this site has a wide variety of science images scanned from out of print books
Phylopic – download silhouettes and simple graphics for worksheets. Searchable by phylum
Medical Illustrations (Grays Anatomy) – comprehensive resource for your anatomy pages
Flaticon – collection of icons that can be used with worksheets, very print friendly for spicing up those handouts!
Photo Sites
NOAA – National Oceanic and Atmospheric Information photo library
Flickr – users upload thousands of photos daily, many are licensed as creative commons
Public Domain Pictures – Photos and png images for slides and other projects
Pixabay – more photos for your projects, royalty free and stock photos – find great headers for your Google Classroom