The alga is thus protected from predators; the sponge is provided with oxygen and sugars which can account for 50 to 80% of sponge growth in some species.
ðɪ ˈælɡə ɪz ðˈʌs pɹətˈɛktᵻd fɹʌm pɹˈɛdəɾɚz; ðə spˈʌndʒ ɪz pɹəvˈaɪdᵻd wɪð ˈɑːksɪdʒən ænd ʃˈʊɡɚz wˌɪtʃ kæn ɐkˈaʊnt fɔːɹ fˈɪfti tʊ ˈeɪɾi pɚsˈɛnt ʌv spˈʌndʒ ɡɹˈoʊθ ɪn sˌʌm spˈiːsiːz.