Identify Plant

[cooper1973]

can anyone possibly identify this plant for me as its been an ongoing problem and want it to go there is two types growing

 

[Donya]

Green one is in the Caulerpa genus. Maybe C. serrulata? Doesn't look like it's branching though, so that may be the wrong species. I'm assuming the red stuff is the other type you wanted an ID on, but I'm drawing a blank on that.