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SLW Calender@
Up-dated on February 1st, 2010

The calender shows seasonal and geographical index of occurrence and distribution of cetaceans and other natural phenomenon in Nemuro Strait, based on observation and hearings 1994-2009. The occurrence may be variant in years.
Edited by Hal Sato, 2006, 2007 and 2009.
Please do not reproduce either part nor entire table.
Cetacean sp. and
nature phenomenons
Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec.
Ice floes (drift ice) œ  œ œ
schools of shearwaters
Puffinus sp.
›   œ œ
harbor porpoise
Phocoena phocoena
› › › ›
Dall's porpoise
Phocoenoides dalli
›   œ œ œ
Pacific white-sided dolphin
Lagenorhynchus obliquidens
œ   › ›
Steineger's beaked whale
Mesoplodon steinegeri
orca/killer whale
Orcinus orca
œ œ œ œ
Baird's beaked whale
Berardius bairdii
œ œ œ œ œ œ œ
sperm whale
Physeter macrocephalus
œ œ œ œ œ œ œ
minke whale
Balaenoptera acutorostrata
›    › ›
humpback whale
Megaptera novaeangliae
unidentified cetacean sp.
–Exceptional few "stranding" cases of beluga iDelphinapterus leucas), as well as a few sightings of
"like northern form of short-finned pilot whale" were logged in the past decade.


coloration and symbols index
reliable occurrence/common
sometime occur
rarely, or occasionally occur
œ rather found in deep water
› rather found in non-deep water
 no apparent geographical tendency
All rights researved by Hal Sato, 2006-2012. WWW.slw.jp/