A blue whale is made up of multiple cells. It is a multicellular organism, composed of different types of specialized cells that work together to carry out various functions necessary for the whale's survival.
more than one lynx is call lynxes
you call them possums if your talking about more than 1
Since they're pregnant for more than a year, less than one.
More than one fisherman is fishermen
More than one platypus is two or more platypuses. The plural is not 'platypi'.
Fish
Ants
swans
Vampiresses.
Polygamy.
Pegasi I think.