Wikimedia Commons

File:Detail of Sea Urchin Skeleton (31776781367).jpg

Original file ‎(7,000 × 4,641 pixels, file size: 14.93 MB, MIME type: image/jpeg)

Captions

Captions

Add a one-line explanation of what this file represents

Summary edit

Description

The image shows a detail of the test (=shell, skeleton) of a symmetric sea urchin with a diameter of about 4 cm. The hole on the left is the anus (on the upper side of the sea urchin). It is surrounded by the apical disc containing a total of five holes (gonopores), through which eggs and sperm are released. The yellow spots are the sockets of the spines. In between are rows of holes for the tube feet protruding between the spines.

Mitutoyo M-Plan Apo 5x microscope lens. The long edge of the image is actually only about 7 mm long.

Focus stack with 40 steps. I used the electronically controlled focusing rack Novoflex Castel Micro and the HeliconFocus Pro software for stacking with Method A (Radius 1, Smoothing 1). Contrast slightly enhanced in Photoshop.
Date
Source Detail of Sea Urchin Skeleton
Author Bernd Thaller from Graz, Austria

Licensing edit

w:en:Creative Commons
attribution
This file is licensed under the Creative Commons Attribution 2.0 Generic license.
You are free:
  • to share – to copy, distribute and transmit the work
  • to remix – to adapt the work
Under the following conditions:
  • attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
This image was originally posted to Flickr by Bernd Thaller at https://flickr.com/photos/44296132@N06/31776781367. It was reviewed on 31 August 2020 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0.

31 August 2020

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeThumbnailDimensionsUserComment
current09:39, 31 August 2020Thumbnail for version as of 09:39, 31 August 20207,000 × 4,641 (14.93 MB)RTG (talk | contribs)Transferred from Flickr via #flickr2commons

You cannot overwrite this file.

There are no pages that use this file.

Metadata

This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.

Retrieved from "https://commons.wikimedia.org/w/index.php?title=File:Detail_of_Sea_Urchin_Skeleton_(31776781367).jpg&oldid=735404222"