• Animal Systematics, Evolution and Diversity
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• v.24 no.2
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• pp.147-150
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• 2008

Two species of the family Chalinidae, Haliclona (Gellius) tubulensis n. sp. and Haliclona (Gellius) marismedi were collected from Hongdo Island and Gageodo Island, Korea during 2004-2007. H. (G.) tubulensis n. sp. is closely related to H. (G.) coreana in type of spicules and growth form. But it is different in size of toxas and oscules. Toxa of H. (G.) tubulensis n. sp. is one type and its oscules are tuberculated. The toxa of H. (G.) coreana is two types and lacks projections. The overall shape and spiculation of H. (G.) marismedi are nearly identical with specimens described by Pulitzer-Finali (1977).

• Animal cells and systems
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• v.8 no.4
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• pp.247-250
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• 2004

A taxonomic study on marine sponges was conducted by SCUBA diving at Gageodo Island, Korea from August 1999 to July 2001. Among them, Haliclona (Gellius) coreana n. sp. turned out to be new to science. This new species seems to be close to H. (G.) arcoferus Vosmaer, 1885, based on the type of spicules. However, it is different in size of toxa and growth form. Toxa of the new species is half in length compared to H. (G.) arcoferus. The growth form is jar shaped in this new species, but flat in H. (G.) arcoferus.

• Journal of the Korean Magnetic Resonance Society
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• v.25 no.2
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• pp.24-32
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• 2021

Two new sesterterpenes, including a known sesterterpene, were isolated from the marine sponge Haliclona sp. collected in the Gageo island, Korea. One of the new sesterterpenes (1) was an unusual compound possessing a spiroketal moiety and the other (2) represented a four ring-fused skeleton. The planar structure of compound 1 was identical to gombaspiroketals A and B isolated from the marine sponge Clathria gombawuiensis, but the configuration for the two chiral centers was different each other. On the other hand, the skeletal structure of compound 2 was similar to that of phorone A isolated from Phorbas sp. and a compound from C. gombawuiensis, except for one configuration at C-8. However, in comparing the ¹H and ¹³C NMR spectral data, the proton and carbon chemical shifts for the three compounds were almost consistent. The NOESY spectrum revealed that the C-8 configuration of 2 was reversed to that of the two reported compounds. The configuration for compound 2 was supported by quantum mechanical calculation for the carbon chemical shifts and DP4+ probability for the protons and carbons of 2.