Does anyone know what this is?
We brought back some plants from the Gulf of Mexico and this sea worm ,or whatever it is was minuscule and now it is over three inches long ,roughly a month and a half later. Have been searching online but haven't found it yet. They were tiny but are breeding and I am thinking that they may be better off in a tank by themselves as right now they are in our seahorse tank. Any info on these critters would be greatly appreacated .