1063-0740/03/2904- $25.00 © 2003
Russian Journal of Marine Biology, Vol. 29, No. 4, 2003, pp. 201–205.
Original Russian Text Copyright © 2003 by Biologiya Morya, Khodakovskaya.
The fauna of calcareous sponges in the Russian
waters of the Sea of Japan, including the areas north of
the Tumannaya (Tumangan) River mouth in the west
and La Perouse Strait in the east, has been poorly stud-
ied to date. Sufﬁce it to say that only two papers report-
ing some ﬁndings of calcareous sponges in this region
have been published. One of these papers  deals with
seven Calcarea species, and another one  shows one
of these species to inhabit the shallow waters of the Sea
of Japan and the Sea of Okhotsk.
This study examined the faunistic composition of
calcareous sponges in the survey area using the rich
collections of the Zoological Institute (Russian Acad-
emy of Sciences).
MATERIALS AND METHODS
The collection of calcareous sponges kept in the
Zoological Institute (Russian Academy of Sciences, St.
Petersburg) served as the material for the study. The
sponges were identiﬁed using diffuse spicule prepara-
tion and transverse section techniques. Diffuse spicules
were prepared by maceration of organic matter in a
fragment of the sponge body and the resulting sediment
was placed on slides. For obtaining sections, pieces of
the sponge body were frozen. The sections were
mounted in glycerol.
RESULTS AND DISCUSSION
Based on the examination of the available material
and the data reported by other authors, a list of Calcarea
species was compiled for Russian waters of the Sea of
Japan. This list comprises 15 species, ﬁve of them
recorded for the ﬁrst time in the Sea of Japan:
Hozawa et Tanita, 1941;
Hozawa, 1918; and
For each species, the sites where it was found and,
where possible, the data on the depths and grounds
inhabited are listed (see ﬁgure).
Calcarea Bowerbank, 1864
Subclass Calcinea Bidder, 1898
Clathrinida Hartman, 1958
Family Clathrinidae Minchin, 1900
In the Sea of Japan,
cho-Maclay, 1868) was encountered for the ﬁrst time in
the coastal waters of Honshu Island [19, 20]. Speci-
mens matching the description of this species were
found in two samples obtained south of Vladimir Bay
from silt–sandy grounds at the depths of 84 to 97 m.
(Schmidt, 1864), referred to as
, was reported by Berton  to occur in
Sovetskaya Gavan’ Bay at the depth of 10 m. However,
it seems hardly possible for a Mediterranean species to
be found in the Northern Paciﬁc.
In the Sea of Japan,
1812) was encountered for the ﬁrst time in the coastal
waters of Japan (Wakasa Bay) .
Specimens matching the description of this species
were found in 15 samples collected in the coastal
waters of Sakhalin Island (off Antonovo settlement)
and Moneron Island, as well as in Peter the Great Bay
Fauna of Calcareous Sponges (Calcarea) in Russian Waters
of the Sea of Japan
A. V. Khodakovskaya
Zoological Institute, Russian Academy of Sciences, St. Petersburg 199034
Received January 14, 2003
—Based on the collection of the Zoological Institute (Russian Academy of Sciences, St. Petersburg)
and the data available in the literature, a list of calcareous sponges (Calcarea) of the Russian waters of the Sea
of Japan was compiled. It comprises 15 species belonging to ten genera and seven families. Among these
sponges, ﬁve species were found in the Sea of Japan for the ﬁrst time:
Hozawa et Tanita,
(Schmidt). Data on the distribution and ecology of the calcareous sponges in the area of study are reported.
calcareous sponges (Calcarea), Sea of Japan.