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The minke whale is a baleenwhale…A whale with no teeth, but instead a filteringmechanism made up of baleen plates whichstrain small prey from large mouthfuls of waterengulfed by the whale. The plates of baleenhang down from the whale’s upper jaw.
Pleats or grooves in the whale’s throat extendto enable it to gulp in an enormous quantity ofwater and prey. The water is then strainedthrough the plates of bristly baleen, trappingthe prey in its mouth.
The most abundant baleen whalein our waters…There may be several thousand minke whalesliving in waters around the UK, whereas thereare only a few thousand blue whales left inthe whole world. Minke whales are found in allof the world’s oceans and some may migrate
between warmer waters in the winter and coolhigh latitude waters in summer. There isevidence that minke whales return to the sameareas of Britain year after year.
Minke whales from different oceans vary insize and appearance. Some scientists believethat there are actually several different speciesof minke whale and it is now accepted thatthere are at least two. The ‘common minkewhale’ (Balaenoptera acutorostrata) includesall minke whales in the Northern Hemisphereand also the dwarf minke whale which isfound in the Southern Hemisphere. The other,larger and more numerous, species is knownas the ‘Antarctic minke whale’ (Balaenopterabonaerensis) and is most frequently observedat high latitudes close to the Antarctic ice.
Inquisitive…Minke whales may approach boats and spendhours swimming round a stationary vessel.Sometimes this behaviour is dangerous for thewhales. Some whaling boats have harpoonsmounted on both the stern and bow to enablethe whalers to kill curious or ‘friendly’ whalescircling their vessels.
A species which gives birth to itscalves just off our coast…We still know relatively little about whales, asthey live highly mobile lives and spend most oftheir time underwater. Minke whales aroundthe British Isles seem to give birth to theircalves in winter, after a 10-month gestationperiod. Like other mammals, they suckle their
calves with milk. Calves are weaned at about
six months.
The smallest baleen whale aroundthe British Isles…Minke whales are usually about 9 metres long
and weigh up to 14 tonnes, quite tiny
compared to the largest whale, the blue
whale, which may reach 30 metres in length
and weigh 190 tonnes.
A fast swimmer…Minke whales are slender and streamlined
with a pointed snout. They may swim at
speeds of around 30 km/hour and have been
reported to surf along next to yachts on ocean
passages.
A species which communicatesusing sounds…These include low frequency grunts and
thumps which can be detected over tens or
even hundreds of miles.
Now the prime target of thewhaling industry…The diminutive minke whale was once
considered too small for whalers to target. It is
now the only whale present in substantial
numbers. Despite the whaling moratorium,
each year around 2,000 minke whales are
killed by Norway and Iceland in the North
Atlantic and by Japan in the North Pacific and
Southern Ocean Sanctuary.
Whales, dolphins and porpoises are protected by UK and European law. If
you see anyone harassing them, please inform the police.
The WiSE Scheme, Green Blue Initiative (a joint RYA and BMF initiative) and
wildlife organisations work with boat and marine craft users to increase
awareness and ensure responsible behaviour around marine wildlife. Under
UK law boat users must ensure that they avoid affecting whales, dolphins,
porpoises and basking sharks through reckless behaviour or intentional
disturbance.
For further information on the IWC’s proposed general principles for whale
watching and IFAW’s reports on various aspects of whale watching, see the
whale watching section of the IFAW web site.
Research • Education • Conservation
Special thanks to R Fairbairns and Sea Life Surveys for contributing photographs.
Photographs © IFAW unless stated Design | Binding Associates
Printed on Take 2 Offset, made from 100% recycled fibres sourcedonly from post-consumer waste
Until the 1980s, our knowledge of whales was based mainly on inves-tigations of dead animals (from whaling operations and whales whichstranded on land). Increasingly, techniques which do not require scien-tists to kill or harm whales are being used to study them. This istermed ‘benign research’. Survey techniques for counting minkewhales and photo-identification (the use of photographs of individualwhales) can be used to build up a better picture of the whales aroundour coasts. By photographing the unique scars and dorsal fins of indi-vidual whales, researchers have gathered information over the yearson the identity and home ranges of individuals and their associationswith other individual minke whales.
In order to be able to conserve whales and marine life effectively, sci-
entists need to find out more about the biolo-gy, habits and numbers of whales and dol-phins. Around the British Isles, minke whalesand other marine mammals face a range ofthreats, including pollution and disturbancefrom ships and industrial activities such as oilexploration. These may damage importanthabitats, for example, the continental shelfedge west of the Shetland Islands and OuterHebrides, an area which appears to be primewhale habitat.
IFAW promotes the development and use ofbenign research. Since 1987, IFAW’s researchvessel ‘Song of the Whale’ has covered morethan 300,000 miles and worked in over 20countries, providing a platform for pioneeringstudies of threatened marine mammals. In
2004, the original vessel was replaced with a purpose designed andbuilt research vessel. Thework of the ‘Song ofthe Whale’ teamis vitally impor-tant inshowingthat wedo notneed tokillwhalestostudythem.
paired blow-holes
sharp ridge ontop of head
pointedsnout
mouth whichcontains platesof baleen
dark back
falcate dorsal fin,variable in shape
tail stock
white belly
broad tail flukeswith slight notchin centre
small pointed flippers with distinctive white band
50-70 throatgrooves orventral pleats
pale ‘chevron’
External Appearance ofa Minke Whale
The little Leviathan
SEA WATCHFOUNDATION
Benign research and conservation
For further information
International Fund for Animal Welfare87-90 Albert EmbankmentVauxhall, London SE1 7UD
Telephone 020 7587 6700www.ifaw.org
Your sighting could be important scientificinformation. Please report sightings to
Sea Watch Foundation11 Jersey Road, Oxford OX4 4RT
Telephone 01545 561227E-mail [email protected]
or in west Scotland to
The Hebridean Whale and Dolphin Trust (HWDT)28 Main Street, TobermoryIsle of Mull, Argyll, Scotland PA75 6NU
Telephone 01688 302620Fax 01688 302728www.hwdt.org
For information on wildlife watching around the British Isles with an accredited operator, visitwww.wisescheme.org.uk
and whale watching in the British Isles
Take action now by writing to your MP urging the Government to improve protection for whales. Visit www.stopwhaling.co.uk to learn more.
Ajoin
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ww.thegreenblue
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Ajoint
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ww.thegreenblue
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Whale watchingguidelines; do itright !Watching whales, dolphins and porpoises (collectively
known as cetaceans) in their natural habitat can beexciting and inspirational, but care must be taken to
avoid disturbing them, as this could cause them to leavethe area, and may interfere with normal feeding and social
behaviour. It is a privilege to be able to watch cetaceans in thewild and it is important that we protect them for years to come.
The best whale watching experiences involve animals that are undis-turbed and ‘choose’ to initiate the encounter. The aim of good whale
watching is to observe the normal behaviour of cetaceans. Cetaceansmay even approach the vessel, if it is operated with caution and sensitivi-ty around them.
All commercial whale watchers should operate to a code of conduct.Choose trips operated by a recognised accredited operator, who will befollowing comprehensive guidelines.
IFAW and many other groups have proposed guidelines for ‘responsi-ble’ wildlife watching, aimed at minimising its impact. The following
guidelines are suggested for watching minke whales (althoughmost points will also apply to other species of cetacean).
= Always keep a good look out – if you see whales, slowdown and avoid sudden changes in speed, direction or
noise.
= Approach whales with caution and neverfrom head-on. Keep the engine running to
ensure both your manoeuvrability andthat the whale has heard you.
= Never chase, encircle or overtakewhales or cause groups to separate.Leave a good distance between theboat and the whale. If the boat getstoo close the whale may become
frightened and swim away.Remember, the best encounters occur
when the whales themselves decide toapproach you!
= Exercise extreme caution if mother/calfpairs or young whales are present – they may
be easily disturbed and more susceptible tocollisions. Ideally, leave them alone.
= If whales show any signs of becoming disturbedor alarmed, move away slowly and keep away.
= If you observe another vessel enjoying anencounter with a whale, wait until they have movedout of the area before you approach.
= On some occasions whales will simply not be ‘inthe mood’ to be approached. Don’t put pressure
on your operator to break the guidelines toget close on these occasions.
= Dispose of fuel, oil, litter, food andother contaminants appropriately
on shore.
Sea
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Minke businessIn 1982, the International Whaling Commission (IWC)adopted an indefinite moratorium (ban) on commercialwhaling, which came into effect in 1986. The whalershad moved from one species of whale to the next(starting with the largest), drastically depleting thepopulations they left behind, until only the minkewhale remained in large numbers.
Despite international protection, Norway, Iceland andJapan continue to set catches of around 2,300 minkewhales each year* either under a formal objection tothe whaling moratorium (Norway) or using theloophole of ‘scientific’ whaling. In Norway andIceland the actual catches are often lowerthan those set and seem limited by thedemand for whale meat. Norway andIceland lobby hard to resumeinternational trade in whale meat withJapan, in order to realise huge profits.History has shown that it is almostimpossible to police such a trade.
*This figure is for the twelve months from August 2006. For up
to date catch figures see the whaling section of the IFAW web site.
Iceland has taken 20-40 whales each year between 2003 and 2006,
while Norway set a 2006 catch of 1054 whales. Japan intends to take
935 minke whales in Southern Ocean Sanctuary and 220 in the North
Pacific.
The Minke whale– local heroMost people do not realise that minke whales (and atleast twelve other species of whale and dolphin) areregularly spotted around our shores, and most areunaware that it is possible to go whale watching in theBritish Isles.
Whale and dolphin watching trips are available fromMull, Oban, Arisaig and Gairloch on the west coast ofScotland, in the Moray Firth and Stonehaven in NEScotland, from New Quay in West Wales, Pwllheli andNeyland in West Wales and in Dingle Bay and theShannon estuary in SW Ireland. In addition, you may befortunate enough to see marine mammals (whales,dolphins and seals) from a number of coastal lookoutspots around Britain and Ireland. Information should beavailable from local tourist offices and Wildlife Trusts.
Other species of whale and dolphin present aroundBritain and Ireland include harbour porpoise, bottlenose,common, striped, white-beaked, Atlantic white-sidedand Risso’s dolphin, orca, long-finned pilot and northernbottlenose whale, fin and humpback whale.
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MINKE WHALE BEHAVIOUR1 SpyhopThis is when a whale pokes its head above the surface of the water, perhaps tohave a look around. Minke whales are notoriously nosy and may often be seenspyhopping!
2 BlowThis describes both the act of breathing and the cloud of water vapourproduced when a whale breathes out. The blow of a minke whale is quick,small and hard to spot even in calm seas.
3 DiveMinke whales arch their tail stock before diving, but do not show their tailflukes as they dive. They usually dive for three to eight minutes, although theymay remain underwater for up to 20 minutes.
4 SurfacingMinke whales break the surface with their pointed snouts. When travelling,they normally take one or two breaths between dives. The blow-holes and finare usually visible simultaneously.
5 BreachingMinke whales may breach quite frequently, especially in bad weather andduring feeding bouts. They propel themselves out of the water, often clearingthe surface with most of their body, and splash down onto the water surfaceon their belly, back or side.
6 Lunge feedingMinke whales often feed near the surface, pursuing schools of fish, which mayattract seabirds such as shearwaters, gannets, gulls and skuas. Worldwide,minke whales feed on a wide variety of prey ranging from zooplankton (krill)to herring, sand eels and other small fish.
Minkewhales
AND WHALE WATCHING IN THE BRITISH ISLES
Common dolphin