to 9.8 cm over the
same time period resulting in growth rates of 1 and 3 cm/year in
first and second year, respectively. Sponge growth appeared to be
seasonal: diameter increase averaged 15 ± 20.6% (mean ± SD, n ¼ 3)
over fall and winter (October to February) and 87 ± 6.3%
(mean ± SD, n ¼ 2) over spring and summer (February to October).
Note, however, that fall-winter growth was measured over 5
months, whereas spring-summer growth was measured over 7
months due to the spacing of our surveys.