I have always wondered, whilst walking along the beach, how on earth do these small, rubber-like animals survive at all? Where are their organs, nerves...anything?
2007-03-27 13:41:17 · 3 answers · asked by Sapiens-sapiens 2 in Science & Mathematics ➔ Zoology
Alright, now, I understand that they are simple, only jelly, but how then do they eat? Do they merely absorb food particles through their epidermis?
2007-03-27 14:43:46 · update #1
They only have epidermis and endodermis where they have a gastrovascular cavity, so they have a sort of mouth. Between these two layers, there is a jelly layer called the mesoglea that doesn't have any cells. Some have cnidocites or nematocists, the urticant cells in the tentacles. They lack any means of internal transport of nutrients, like blood, they do everything by diffusion.
They are really beautiful but also delicate and sometimes even dangerous.
2007-03-27 14:31:12 · answer #1 · answered by Lara Croft 3 · 0⤊ 0⤋
They're just simple protoplasm
Clear as cellophane
They ride the winds of fortune
Life without a brain...
Margaritas anyone??
2007-03-27 21:10:03 · answer #2 · answered by margarita 7 · 0⤊ 0⤋
http://dockwatch.disl.org/anatomy.htm go here it will help you somewhat.
2007-03-31 20:38:41 · answer #3 · answered by cheyenne c. 2 · 0⤊ 0⤋