|
| |
| | ScienceDaily: Mollusk |
 | | The scientific study of molluscs is called malacology. | | | The principal body cavity is a blood-filled hemocoel. | | | It is unknown whether they have a true coelom (eucoelom); any coelomic cavities have been reduced to vestiges around the hearts, gonads, and metanephridia (kidney-like organs). |
|
http://www.sciencedaily.com/encyclopedia/mollusk
(1446 words)
|
|
| |
| | Mollusk - Free Encyclopedia |
| | The principal body cavity is a blood-filled hemocoel, with an actual coelom present but reduced to vestiges around the hearts, gonads, and metanephridia (kidney-like organs). | | | The body is divided into a head, often with eyes or tentacles, a muscular foot and a visceral mass housing the organs. | | | The giant squid is the largest invertebrate, and, except for their larvae and some recently captured juveniles, has never been observed alive. |
|
http://www.wacklepedia.com/m/mo/mollusk.html
(291 words)
|
|
|
