Image:SEM microshells in sand.jpg

From [1] (there are other unidentified microshells that have not been uploaded to commons)

PD notice at [2]: These artificially colored images were originally put in the public domain in a very early AOL image library, circa 1995, by R. B., a teacher and electron micrographer, along with text files describing the images and providing an interesting introduction to the SEM.

Original caption:

microshells in sand

These tiny shells are found in sand and the ones imaged here and below are about double the size of salt grains.

This file has been released into the public domain by the copyright holder, its copyright has expired, or it is ineligible for copyright. This applies worldwide.

Note: This tag is obsolete! Don't use this generic template - please use instead: {{PD-old}} (for works out of copyright where the author has been dead for over 70 years), {{PD-Art}} (for photos of old paintings and art out of copyright), {{PD-ineligible}} (for trivial work), {{PD-USGov}} (for work by the U.S. federal government), {{PD-self}} (if the uploader and creator releases the rights), {{PD-user|user}} (if another user released his/her rights), or {{Copyrighted free use}}. use {{PD-user-w|projectcode|projectname|username}} for users with no account on Commons. {{PD-author|Author's name}} - for works released into the public domain by non-Wikimedia users. If the work is PD for another reason, check the copyright tag page or use {{PD-because|reason}}. العربية | česky | Deutsch | English | Español | Türkçe | Français | हिन्दी | Italiano | 日本語 | Norsk (nynorsk) | Português | Русский | po slovensky | slovenščina | Српски | Polski | 简体中文 | +/-