Index: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Home > Siphonophora
Siphonophora is an order of the Hydrozoa, a class of marine invertebrates. They are colonial, and the colonies may superficially resemble jellyfish. The best known species is the Portuguese Man O' War. Each individual Man O' War is a colony.
Read more »