Here is a nice collection of plankton underwater shot by Dr. Evan D’alessandro while conducting research offshore Miami
the Portuguese Man of War is not a Jellyfish but a Siphonophore!
The Portuguese Man of War or Physalia is a siphonophore floating at the surface of the ocean like a drifting balloon with deadly tentacles waiting to capture careless preys. Its body looks like a sail that catches the ocean wind to propel itself.
Portuguese Man of War Fish
The Portuguese Man of War Fish or Nomeid seems to be immune to the powerful sting of the Physalia. It is actually a very agile swimmer that can avoid the stinging tentacles.It uses this deadly siphonophore for shelter against predators and can also feed on some of the smaller tentacles that do not seems to have a strong sting.
Nice ctenophore
Our favorite, the Venus Belt! Nice to see this one in color!
salp chain
If you click on the this amazing picture you will see a small fish larvae seeking shelter among the salps. very neat!
ctenophore bloom
Beautiful bloom of lobate ctenohphores. The wall of death some smaller plankters:)
Plankton Portal 
wow. they’re really awesome! nice to see them in colors:)
I couldn’t agree more 🙂
Hi I would love any copyright information you could provide about using the photo “ctenophore bloom” as a cover for a book in Costa Rica. Thaks a lot!
Hi Sergio — I’m sorry that this comment got lost! Email Cedric Guigand at cguigand [at] rsmas.miami.edu for permission to use these photos.