Testate amoeba, part 4 of 4

What you see

Testate amoebae carry a shell; look for the opening from which the pseudopods come out.

Recorded on 20 July 2018. This loop is the 6:33–6:58 part of a 7:43 recording; the full recording is on Commons.

Points to check against your own sample:

• A rigid shell with one opening; lobes of cytoplasm come out of it and pull the shell along.
• Arcella: smooth, round, yellow to brown dome, seen from above as a disc with a central hole.

Other parts of the same recording: Testate amoeba, part 1 of 4, Testate amoeba, part 2 of 4, Testate amoeba, part 3 of 4.

Full description and look-alikes: Testate amoebae.

Credit line

Video: Alexander Klepnev, CC BY 4.0, via Wikimedia Commons

MP4 1280×720 0.9 MB MP4 640×360 0.1 MB