Fatty Acid (FA) composition in % of total PLFA of deep-sea demosponge species (order Tetractinellida): <i>Geodia atlantica</i> (<i>Ga</i>), <i>G</i>. <i>barretti</i> (<i>Gb</i>), <i>G</i>. <i>hentscheli</i> (<i>Gh</i>), <i>G</i>. <i>parva</i> (<i>Gp</i>) and <i>Stelletta rhaphidiophora</i> (<i>Sr</i>).

FA names are given in ω and Δ notation and a hybrid form, with corresponding total C atoms (C) and equivalent chain length (ecl). FA categories match with those of Fig 2. Only FAs with abundance ≥1% (in at least one species) are shown. Numbers in bold are ≥ 10% of total FAs.