6 - 3 = ?  
Input the result from the expression
Maximum attempts you can try: 10
 

Re: sea cucumber

Subject: Re: sea cucumber
by SH4RKN0S3 on 17/3/2007 13:50:03

Sea cucumbers are holothurian echinoderms, so are related to starfish and sea urchins. They are detrivores and feed in one of two ways. Some use their tenticles to filter the water column. Others burrow through the substrate and ingest particles from it, so if it's one of these then it should sift your sand well.
They have a tough skin so should be safe with most fish. As a defense mechanism they can eject their digestive tract, leaving a predator to feast on it, while crawling away to regrow it . Some can also eject sticky threads from their back end called cuverian tubules which wrap around predators, incapacitating them.