Sea cucumber (Holothuria sanctori). You can see in the image the sticky mucous threads that project onto possible aggressors to irritate or disable them; in addition, in some cases they contain toxins (holoturins). Marine invertebrates of the Canary Islands, Tenerife.
Sergio Hanquet / Biosphoto
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JPEG bitmap image
Image size: 5694x3800 pixels (19"x12.7" @300dpi)
Shooting date : 2021-02-23