tag:blogger.com,1999:blog-3433304117507034540.post7515646458699118705..comments2024-01-27T05:20:35.844-08:00Comments on The Echinoblog: More on Feather Stars!! How Long Do They Stick Around?ChrisMhttp://www.blogger.com/profile/11784970666468925633noreply@blogger.comBlogger6125tag:blogger.com,1999:blog-3433304117507034540.post-2097650606738338422009-05-07T16:33:00.000-07:002009-05-07T16:33:00.000-07:00They crawl, primarily by using their arms. This oc...They crawl, primarily by using their arms. This occurs frequently in feather stars, but also in sea lilies: http://www.google.com/search?source=ig&hl=en&rlz=&=&q=crawling+crinoid&btnG=Google+Search&aq=f&oq=<br /><br />Feather stars also swim, but not to get to point A to point B, but rather to escape tough spots.Alexhttps://www.blogger.com/profile/14952911601568899409noreply@blogger.comtag:blogger.com,1999:blog-3433304117507034540.post-42824644106728794122009-05-07T16:30:00.000-07:002009-05-07T16:30:00.000-07:00How exactly do crinoids go about moving themselves...How exactly do crinoids go about moving themselves from one perch to another? Do they release their foot or some sort, and just float away?YoUsed2beCoolhttps://www.blogger.com/profile/07672057746616618985noreply@blogger.comtag:blogger.com,1999:blog-3433304117507034540.post-71046320435365940722009-04-23T11:09:00.000-07:002009-04-23T11:09:00.000-07:00They could be self-sensing, if a good perch is def...They could be self-sensing, if a good perch is defined as somewhere crinoids have been before. This is demonstrated before, I forget whether it was corals or urchins or both. Gotta look that one up.Peter Etnoyerhttps://www.blogger.com/profile/08210458374365232067noreply@blogger.comtag:blogger.com,1999:blog-3433304117507034540.post-63463854121682120512009-04-23T06:40:00.000-07:002009-04-23T06:40:00.000-07:00What would dictate a 'good perch'? I presume that...What would dictate a 'good perch'? I presume that would be water current flow and feeding dynamics...They hold their arms into the water and pick food out of the current..so a good spot would be highly sought after.<br /><br />but beyond that? only they know for sure...:-)ChrisMhttps://www.blogger.com/profile/11784970666468925633noreply@blogger.comtag:blogger.com,1999:blog-3433304117507034540.post-57237892613986260882009-04-23T06:39:00.000-07:002009-04-23T06:39:00.000-07:00It's all about water currents for them. They likel...It's all about water currents for them. They likely sense currents using their tube feet, though I don't know that anyone has a definitive answer for that. Probably looking at how other echinoderms detect their environment would be a good place to start.Alexhttps://www.blogger.com/profile/14952911601568899409noreply@blogger.comtag:blogger.com,1999:blog-3433304117507034540.post-42888997653559727522009-04-23T02:40:00.000-07:002009-04-23T02:40:00.000-07:00This is so fascinating! How does a crinoid recogni...This is so fascinating! How does a crinoid recognize a 'good perch'? What rules the little beasty does follow in moving towards such a place?Jan-Maartennoreply@blogger.com