2) These flatworm-like creatures have shafts in their skin to contain semi-rigid rods that they can extrude out their front ends by contracting their bodies. The rods offer skeletal support, some protection from biting predators, and are used primarily to knock food particles back into the mouth. The larger species will even grasp snails and fish eggs and pull them into the mouth.
3) The back end of this worm resembles greatly an octopus tentacle (or it is supposed to, anyway) to frighten away fish or crabs that might eat it. It even has suckers running all the way down the underside of its body that it walks on.
4) This fish communicates with chromatophores on its sides (those spots change color on demand).
5) I'm not sure if this is more of a snail or a limpet - perhaps neither. This is only the shell and the animal is not shown.
6) This algae-nibbling arthropod is my favorite of the group. To escape predators, it swims with speed and agility by using its large tail.
7) This is a flower that grows on the island. It is the size of a large dinner plate or medium pizza.