Image sources

• Scallop_eyes2.jpg and the modified Scallop_eyes_banner.jpg were by Matthew Krumins and obtained from Wikipedia
• alexander-sinn-KgLtFCgfC28-unsplash.jpg – Photo by Alexander Sinn on Unsplash
• markus-spiske-qjnAnF0jIGk-unsplash.jpg – Photo by Markus Spiske on Unsplash
• nasa-Q1p7bh3SHj8-unsplash.jpg – Photo by NASA on Unsplash
• nasa-1lfI7wkGWZ4-unsplash.jpg – Photo by NASA on Unsplash
• joshua-sortino-LqKhnDzSF-8-unsplash.jpg – Photo by Joshua Sortino on Unsplash
• margaret-weir-GZyjbLNOaFg-unsplash.jpg – Photo by Margaret Weir on Unsplash