RNAmmer predicts 5s/8s, 16s/18s, and 23s/28s ribosomal RNA  in full genome
sequences. The method is described in detail in the following article:

RNammer: consistent annotation of rRNA genes in genomic sequences.
Lagesen K, Hallin PF, Roedland E, Staerfeldt HH, Rognes T Ussery DW.
Nucleic Acids Res. Apr 22, 2007.