Hey, Nathan, guess what I saw in the water yesterday...Hydrozoa!
Hey Paul, what's that?
Come on, I'll show you!
I found some here!
I don't see anything...
Good thing I brought my microscope!
*Nathan looks into the microscope*
What on Earth was that Paul?!
That, my friend is Hydrozoa! Obelia polys and medusae to be exact.
Obelia polys and medusae! They live a colonial lifestyle, the same way ants and bees live! Members of the colony have different jobs that are specialized and contribute to the success of the colony.
Tell me more.
TThe life of a hydrozoa starts off as a fertilized egg, that egg then develops into a sessile polyp, which means it does not move. The poly buds asexually and eventually buds off one or more medusae.
*Paul shows Nathan an image from his textbook*
In reproduction, new polyps can either be feeding polyps or reproductive polyps known as gonangia. When a gonangia buds, a medusae is produced. These medusae will then mature and produce their own eggs.
Wow Paul thanks! Who knew marine invertebrates were so cool!
Glad I could show a friend something new! Lets go back to the cafe for lunch.