mmkeeper
Well-known member
How do feather dusters and other intravert see you when you are out side of the tank? In other words, what makes feather dusters and clams close when you move?
Feather Dusters
- Thread starter mmkeeper
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Kensn
Well-known member
Changes in the light... Shawdows.... and vibration...I think...
mmkeeper
Well-known member
How do they see the light?
shallowreef
Well-known member
Most likely its due to vibrations from when we move.
Slickdonkey
Drink me
They can smell you coming.
Kensn
Well-known member
I found this info...
The colorful spots are the clam's "eyes" and allow it to sense light intensity. If a shadow falls on the clam, it will quickly withdraw into its shell.
Clams possess a very basic nervous system, consisting only of nerve ganglia (bundles) which control the organs and organ systems, and also receive sensory data from the clams iridiphores (eye like organs). Notice when you pass your hand over a clam creating a shadow, the clams closes up. The iridiphores can only sense the amount of incoming light.
Additionally, many of these worms will have eyes. Typically the eyes are pigment spots on the top of the head, and typically the animals have either one or two pairs of them. These eyespots are incapable of resolving an image, but they are certainly capable of determining the direction of light or a sudden shadow.
The colorful spots are the clam's "eyes" and allow it to sense light intensity. If a shadow falls on the clam, it will quickly withdraw into its shell.
Clams possess a very basic nervous system, consisting only of nerve ganglia (bundles) which control the organs and organ systems, and also receive sensory data from the clams iridiphores (eye like organs). Notice when you pass your hand over a clam creating a shadow, the clams closes up. The iridiphores can only sense the amount of incoming light.
Additionally, many of these worms will have eyes. Typically the eyes are pigment spots on the top of the head, and typically the animals have either one or two pairs of them. These eyespots are incapable of resolving an image, but they are certainly capable of determining the direction of light or a sudden shadow.
