Anoxycalyx Kirkpatrick 1907

Figure 3. Anoxycalyx joubini on the gangplank at Hut Point, McMurdo Station.The same gangplank with A. joubini in 2010.Source: Dayton PK, Kim S, Jarrell SC, Oliver JS, Hammerstrom K, et al. (2013) Recruitment, Growth and Mortality of an Antarctic Hexactinellid Sponge, Anoxycalyx joubini. PLoS ONE 8(2): e56939. doi:10.1371/journal.pone.0056939

Figure 4. Anoxycalyx joubini growth on rack at New Harbor, Explorers Cove.One of the racks at Explorers Cove in 2010, some A. joubini falling off of structure, but still alive.Source: Dayton PK, Kim S, Jarrell SC, Oliver JS, Hammerstrom K, et al. (2013) Recruitment, Growth and Mortality of an Antarctic Hexactinellid Sponge, Anoxycalyx joubini. PLoS ONE 8(2): e56939. doi:10.1371/journal.pone.0056939

Figure 3. Anoxycalyx joubini on the gangplank at Hut Point, McMurdo Station. 1989, after anchor ice had removed 100% cover of large H. balfourensisSource: Dayton PK, Kim S, Jarrell SC, Oliver JS, Hammerstrom K, et al. (2013) Recruitment, Growth and Mortality of an Antarctic Hexactinellid Sponge, Anoxycalyx joubini. PLoS ONE 8(2): e56939. doi:10.1371/journal.pone.0056939

Figure 4. Anoxycalyx joubini growth on rack at New Harbor, Explorers Cove.One of the racks at Explorers Cove in 2004, with 4 A. joubini;Source: Dayton PK, Kim S, Jarrell SC, Oliver JS, Hammerstrom K, et al. (2013) Recruitment, Growth and Mortality of an Antarctic Hexactinellid Sponge, Anoxycalyx joubini. PLoS ONE 8(2): e56939. doi:10.1371/journal.pone.0056939

Figure 1. Large Anoxycalyx joubini at Cape Armitage, McMurdo Station. Two large A. joubini at a depth of 60 m, 1967. A. joubini in photo is approximately 1.75 m tall.Source: Dayton PK, Kim S, Jarrell SC, Oliver JS, Hammerstrom K, et al. (2013) Recruitment, Growth and Mortality of an Antarctic Hexactinellid Sponge, Anoxycalyx joubini. PLoS ONE 8(2): e56939. doi:10.1371/journal.pone.0056939

Figure 1. Large Anoxycalyx joubini at Cape Armitage, McMurdo Station. Two large A. joubini at a depth of 60 m, 1967. The larger sponge on the right (A. joubini) is approximately 2 m tall.Source: Dayton PK, Kim S, Jarrell SC, Oliver JS, Hammerstrom K, et al. (2013) Recruitment, Growth and Mortality of an Antarctic Hexactinellid Sponge, Anoxycalyx joubini. PLoS ONE 8(2): e56939. doi:10.1371/journal.pone.0056939

White and amphora- shaped. To me it looks rather like Scolymastra (Anoxycalyx joubini).

Big white amphora-shaped sponge