rainbow
The median dorsal vessel in a worm is part of its circulatory system that runs along the dorsal midline of the body. It functions to transport nutrients, waste products, and gases throughout the worm's body.
"Worm poop," or worm castings, look like little pellets of soil, which is basically what they are. If you are talking about dried blood, which is used as a fertilizer, it's a black substance.
Most sea creatures, such as fish, have blood that is similar to terrestrial animals, with red blood cells carrying oxygen throughout the body. However, some invertebrates, like jellyfish and lobsters, have a copper-based blood pigment called hemocyanin, giving their blood a bluish color.
The octopus has three hearts. Two pump blood to the gills, and one pumps blood to the rest of the body.
It's red - the same colour as human blood (and that of most other animals)
Many have red blood, but some have green.
Blood vessel on the bottom of a worm Blood vessel on the bottom of a worm
Blood worm is red and kind of brownish
A blood worm eats fresh water snails and not much else
It's a kind of leech.{A worm that sucks your your blood}
In the game Chicken Crossing what color is that elusive worm?
No, pandas do not have worm blood. Only worms have worm blood. Although, pandas are considered warm-blooded.
purple
the transport blood throughout the worm
They do not even have blood to pump in the first place. Instead of blood, they use sea water to pump nutrients throughout their body. So the answer to your question would be the color of seawater, which varies depending on its constituents.
the main blood vessel in the body
The pigbutt worm (Chetopterus pugaporcinus) is a recently discovered deep sea worm, with a segmented body. The middle segments are highly inflated, giving the animal a round shape, rather like a pair of buttocks. It lives 900 and 1,200 meters (3,000 to 4,000 feet) below the surface.