This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
A monograph of the British marine annelids LXI. Plate text biodiversitylibrary org page Mackintosh other versions PDold monograph of the British marine annelids Dissections
Page 2023 Free-images.com. All images are Public Domain