Re: How many cells are there in a crawfish?

I could not find a reference that actually gave the number of cells in
a crawfish or crayfish, but I'll try to give an estimate based on the
number of cells in a human body.

The human body has about 65 trillion cells - 65,000,000,000,000 cells.
If we say that the average human being weighs about 150 pounds, and
the average crawfish or crayfish weighs about .25 pounds (crayfish range in 
weight from 2 to 8 ounces, or from .1 to .5 pounds), then we can
estimate that a crayfish would have about (.25/150) x 65,000,000,000,000 
cells = about 100 billion cells.

100 billion is a very large number - very hard to relate to. If you tried
to count each cell in a crayfish, and were able to count 5 cells each 
second - and worked at counting the cells day and night, without taking any 
time off --- it would take you about 600 years to count the cells in that
crayfish!