File:Seestern (sich aufrichtend).webm

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Original file ‎(WebM audio/video file, VP8/Vorbis, length 53 s, 1,080 × 1,920 pixels, 2.07 Mbps overall, file size: 13.11 MB)

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Deutsch: Verblüffend schnell und wendig: ein kleiner Seestern liegt anfangs auf dem Rücken. Mit einigen schnellen und gezielten Bewegung dreht er sich wieder in die gewohnte Lage mit den Füßen nach unten.

Der kurze Film entstand am 7. August 2021 in einem Gezeitentümpel am seeseitigen Strand der Nordseeinsel Wangerooge, hin zum Ostende.

In den 1990er gehörte der "wendende Seestern" zu den Standard-Beobachtungen unserer Tauchgänge im niederländischen Grevelingenmeer: wir drehten unter Wasser Seesterne an einem Hang auf den Rücken. Sie richteten sich dann immer so auf, dass sie dabei die Schwerkraft günstig nutzten: sie zogen den anfangs aufwärts zeigenden Arm so über die Körpermitte, dass er später abwärts zeigte und durch die so bewirkte Verlagerung des Schwerpunktes eine Rollbewegung nach unten einleitete.

Quellseite: https://www.rhetos.de/html/lex/seestern.htm

Man beachte als Größenvergleich die Sandkörner vom Untergrund. Das Tier war recht klein.

Die umherschwimmenden schwarzen Teile sind Treibsel, vermutlich Holz, im Seewasser.
Date
Source Own work
Author Rhetos, Sabine Heim

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I, the copyright holder of this work, hereby publish it under the following license:
Creative Commons CC-Zero This file is made available under the Creative Commons CC0 1.0 Universal Public Domain Dedication.
The person who associated a work with this deed has dedicated the work to the public domain by waiving all of their rights to the work worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law. You can copy, modify, distribute and perform the work, even for commercial purposes, all without asking permission.

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Date/TimeThumbnailDimensionsUserComment
current18:37, 27 July 202353 s, 1,080 × 1,920 (13.11 MB)Rhetos (talk | contribs)Uploaded own work with UploadWizard

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Format Bitrate Download Status Encode time
VP9 1440P 3.94 Mbps Completed 18:41, 27 July 2023 3 min 47 s
Streaming 1440p (VP9) 3.94 Mbps Completed 20:15, 23 January 2024 2.0 s
VP9 1080P 1.73 Mbps Completed 18:39, 27 July 2023 2 min 6 s
Streaming 1080p (VP9) Not ready Unknown status
VP9 720P 841 kbps Completed 18:38, 27 July 2023 1 min 24 s
Streaming 720p (VP9) Not ready Unknown status
VP9 480P 443 kbps Completed 18:38, 27 July 2023 50 s
Streaming 480p (VP9) Not ready Unknown status
VP9 360P 247 kbps Completed 18:38, 27 July 2023 36 s
Streaming 360p (VP9) Not ready Unknown status
VP9 240P 121 kbps Completed 18:37, 27 July 2023 24 s
Streaming 240p (VP9) 118 kbps Completed 04:48, 14 December 2023 1.0 s
WebM 360P 378 kbps Completed 18:37, 27 July 2023 17 s
Streaming 144p (MJPEG) 1.02 Mbps Completed 01:57, 17 November 2023 4.0 s
Stereo (Opus) 2 kbps Completed 01:57, 17 November 2023 1.0 s
Stereo (MP3) 128 kbps Completed 01:57, 17 November 2023 1.0 s

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