Species Spotlight - Dwarf Brittlestar (Amphipholis squamata) скачать в хорошем качестве

Species Spotlight - Dwarf Brittlestar (Amphipholis squamata)

Species Spotlight - Dwarf Brittlestar (Amphipholis squamata) #speciesspotlight #starfish #sealife #seaanimals #seacreatures Hey guys and welcome back to the channel and to episode 24 of species spotlight, where today’s spotlight will be on the dwarf brittlestar, a small species of brittlestar that can be found on coastlines around the UK! As usual, I'll be telling you all you need to know about this species of sea snail, so stay tuned and you may learn a thing or two! So, let me tell you all about the dwarf brittlestar. As its name suggests, the dwarf brittlestar is one of the smallest species of brittlestars in the world. This brittle star is a starfish-like echinoderm that lives in the intertidal zone in shallow water, and can be found under large stones, shells, and around sessile invertebrates such as bryozoans. This species can be identified by its small appearance and a variable coloration which can be grey to a bluish white. It has thin, short arms that can grow to around 20 mm long, with the round disc in the center growing to 5mm and has a scale covering with D-shaped radial plates. Brittlestars can drop an arm when being attacked by a predator. This process is known as self-amputation, and when the star is threatened, the nerve system tells the collagenous tissue near the base of the arm to disintegrate. The arm regrows, which is a process which can take weeks to months, depending upon the species. Brittlestars don't move using tube feet like sea stars and urchins do, they move by wriggling their arms, and amazingly, they are the first radially symmetrical animal documented to move this way! This species is highly abundant across the UK, only being absent on a stretch of coastline in the east of Scotland. This species is a deposit feeder collecting particles within its tube feet, and a suspension feeder via trapping detritus in mucus. It is hermaphroditic and the eggs are brooded and hatched as juveniles. Underwater footage shot on an Olympus TG-6. Music used: Intro and outro song - Flow Musician: LiQWYD URL:   / liqwyd   Song 1 - Electric Sunrise Musician: Josh Woodward URL: https://www.joshwoodward.com/