• Korean Journal of Environmental Biology
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• v.40 no.4
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• pp.579-590
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• 2022

Three free-living marine nematodes(Desmoscolex(Desmoscolex) max Timm, 1970, Daptonema longiapophysis Huang and Zhang, 2010, and Pseudosteineria sinica Huang and Li, 2010) were newly recorded in Korea. Desmoscolex (D.) max was found from subtidal coarse sediment around Wangdolcho in the East Sea. It was characterized by the presence of untypical setae arrangement, obviously elongated triangle-shaped head, long hairy cephalic setae, a long naked tail spinneret, and the absence of peduncle at the base of somatic setae. Daptonema longiapophysis was obtained from intertidal sandy sediments in the southern coast of Korea. It was characterized by the presence of setiform labial sensilla, spicules with a projection on both sides, and gubernaculum with dorso-caudal apophysis. Pseudosteineria sinica was discovered from the intertidal sediment in the Yellow Sea. It was characterized by unobservable amphideal fovea, different lengths of spicules, and gubernaculum with dorso-caudal apophysis. In this study, we provide detailed morphological features of three free-living marine nematodes by differential interference contrast microscopy.

• Animal Systematics, Evolution and Diversity
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• v.21 no.2
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• pp.233-241
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• 2005

Two new marine sponges of family Tedaniidae, Tedania (Tedon iu) songakensis n. sp. and Tedania (Tedonia) sasuensis n. sp. were collected from Jeju Island and Chuja Island, Korea between 2004 and 2005. T. (T.) songakensis n. sp. is similar to T (T.) purpurescen Bergquist and Fromont, 1988 based on its type of spicules, but is distinguished from growth form and size of small onychaetes. The growth form of this species is massive, and is compared with thin encrusting of Tedania (T.) purpurescen. The onychaetes of the new species is twice as long as that of T. (T.) purpurescen. T. (T.) sasuensis n. sp. is closely related to T. (T.) connectens (Bronsted, 1924) in type of spicules. However, it is different in size of onychaetes and growth form. The large onychaetes of new species is larger than that of T (T.) connectens. The small onychaetes of new species is smaller than that of T. (T.) connectens. The growth form is massive in new species, but thick encrustins in T.(T.) connectens. And T. (T.) songakensis n. sp. is similar to T. (T.) sasuensis n. sp. in growth form. However, the former is widely different from the latter in shape, color and size of all spicules.

• Animal Systematics, Evolution and Diversity
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• v.23 no.1
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• pp.39-44
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• 2007

Two new marine sponges, Clathria (Clthria) jungtaedoensis n. sp. and Antho (Antho) hataedoensis n. sp. were collected in Taedo Island, Korea. C. (C.) jungtaedoensis n. sp. is similar to C. (C.) striata. The new species, however, has many small toxa and massive form. A. (A.) hataedoensis n. sp. is similar to A. (A.) inconstans from Gulf of Naples, Italy, but differs from the latter in the size of spicules. The toxa in the new species is about one third as long as A. (A.) inconstans's.

• Animal Systematics, Evolution and Diversity
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• v.26 no.1
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• pp.75-78
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• 2010

A new marine sponge Cinachyrella unjinensis n. sp. has been collected from Jejudo Island in 2009. This new species is similar to C. kuekenthali (Uliczka, 1929) in the shape and composition of the spicules except for style. However, it differs from the latter by size of anatriaenes, protriaenes and microxeas.

• Animal cells and systems
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• v.12 no.2
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• pp.97-100
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• 2008

A new marine sponge in the family Tethyidae, Tethya uljinensis n. sp. was collected from Uljin, Korea in 2007. Halicometes koreana in the family Tethyidae was redescribed. Tethya uljiensis n. sp. is closely to Tethya simi. in skeletal structure and spicule composition. But, it differs in the size of spicules(stronyloxea) and shape of oxyaster.

• The Korean Journal of Zoology
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• v.34 no.1
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• pp.93-102
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• 1991

Larvae of Ilyoplax dentimerosa Shen, 1932 were reared in the laboratory at $25^{\circ}C$ and 33.3%o salinity. Four zoeal stages were recognized in the lanral development, and these are described and illustrated. The first soeae of 1. dentimerosa are distinguished from other llyoplax zoeae by having minute spicules on the rostral and dorsal carapace spines, a short dorsal carapace spine about half of the carapace length, a conspicuous antennal exopodite with a subterminal sutta and acute spines on the postero-lateral border of the fourth abdominal somite.

• Animal cells and systems
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• v.7 no.3
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• pp.187-189
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• 2003

A new sponge species of the genus Hymeniacidon (family Halichondriidae) from Munsum, Jeju Island, Korea is described. This species is similar to H. sinapium in spicule size, but the color, oscules, external surface and arrangement of the spicules are considerably different. This species is bright yellow in live, and retains multiple oscules and a plumose bundle of styles in the subectosomal region.

• Animal cells and systems
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• v.12 no.4
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• pp.241-243
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• 2008

A new species of the genus Biemna(Demospongiae: Poecilosclerida: Desmacellidae), Biemna hongdoensis n. sp. was collected from Hongdo Island, Korea by SCUBA diving in 2004. B. hongdoensis n. sp. is closely related to B. megalosigma Hentshel, 1912 in their spicules, but the styles and sigmas of new species are larger than B. megalosigma's and microxeas and raphides of new species are smaller than B. megalosigma's. Also, new species has not spheres. The stubby conulose are distributed throughout the surface of new species.

• Animal Systematics, Evolution and Diversity
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• v.25 no.1
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• pp.61-64
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• 2009

A new species Diplastrella yongmeoriensis n. sp. was collected from Jejudo Island, Korea in 2008. This new species is similar to D. bistellata (Schmidt, 1862) in growth form and skeletal structure but differs in the composition and size of spicules. The genus Diplastrella is reported for the first time in Korea.

• The Bulletin of The Korean Astronomical Society
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• v.44 no.1
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• pp.50.4-50.4
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• 2019

We detect a new population of chromospheric jets in a polar coronal hole observed by Hinode/SOT. The propagating speed of the jets ranges in 30 - 490 km/s whose duration time is 3 - 52 s. The recurrent rate is approximately 3/min for a give segment of 1 arc-second horizontal interval. These jets are seemed to be more transient and faster than type II spicules at chromosphere, while the properties are compatible with the network jets seen in emission lines of transition region. We will discuss the implication of these jets for a coronal heating.