Dykning med Valhajar
Lanta Marina Liv | Rhincodontidae
Den största kända fiskarten, valhajen (Rhincodon typus), är en långsamt rörlig, filtermatande matthaj, som ibland ses när man dyker runt Koh Lanta.
Kan du se valhajar i Koh Lanta?
Denna jättehaj finns i öppet vatten i de tropiska haven och oceanerna och besöker ibland de grundare revområdena runt Koh Lanta.
Vi har störst chans att se valhajar runt Koh Haas dykplatser, och eventuellt också vid Hin Muang och Hin Daeng. Vi har också sett dessa massiva hajar vid Koh Rok, Koh Bida Nok och Hin Bida, men det är en mycket ovanligare händelse.
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Whale Shark
(Rhincodon typus)
Whale Sharks are dark grey with a white belly. Their skin is marked with pale grey or white spots and stripes which are unique to each individual.
Whale sharks have five large pairs of gills, a blunt snout, and very large mouths located at the front of the head, rather than on the underside of the head like many other sharks.
Short barbels protrude from the nostrils, common in many carpet shark species.
Rhincodon typus @ Koh Haa
The eyes are small, located just behind the mouth at the front corners of the head.
There are three prominent ridges along the sides, starting above and behind the head, and ending at the caudal peduncle (the narrow part of a fish's body to which the tail fin is attached).
Researchers have found whale sharks spend most of their time in deep water, occasionally rising to the surface to scoop up clouds of plankton, small fish and squid and whatever else happens to be their way.
Whale sharks have also been observed travelling great distances to satisfy their enormous appetites.
Females give birth to live young around 40 to 60 cm long, however humans have never observed this process in the wild. In 1996 a captured female was found to be pregnant with 300 pups.
The birthing locations, and areas where the young spend their first few months of life remain unknown, possibly occurring in the deeper depths of the oceans.
Reaching sexual maturity at around 30 years, whale sharks are estimated to have a lifespan of between 70 and 100 years.
These gentle giants are curious around divers, but scared off by boats, excessive noise and people trying to get too close to them.
Over the years, we have seen more whale sharks around the Koh Haa islands than at any other dive site.
Dykning med Valhajar runt Koh Lanta
Dykning och Snorkelutflykter
Om du vill ha en chans att se Valhajar på en av våra dagliga högsäsongs dykresor från Koh Lanta, skicka oss ett e-postmeddelande till info@diveandrelax.com.
Följ med på våra dykresor med speedboat under högsäsong till några av Thailands bästa dykplatser och njut av små grupper, korta restider och fokus på personlig service, säkerhet och nöje.
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Guider för Marina Djur och Växter i Indo-Stilla Havet
- Allen, G., Steene, R., Humann, P., DeLoach, N. (2003) Reef Fish Identification, Tropical Pacific. Jacksonville, FL., USA: New World Publications, Inc., ISBN 1-878348-36-1.
- Humann, P., DeLoach, N., (2010) Reef Creature Identification, Tropical Pacific. Jacksonville, FL., USA: New World Publications Inc., ISBN 978-1-878348-44-9
- Debelius, H. (2013) Indian Ocean Reef Guide. Frankfurt, Germany: IKAN - Unterwasserarchiv, ISBN 978-3-939767-52-7.
- Debelius, H. (2004) Nudibranchs and Sea Snails, Indo-Pacific Field Guide. Frankfurt, Germany: IKAN - Unterwasserarchiv, ISBN 3-925919-51-1
- Erhardt, H., Knop, D. (2015) Corals Indo-Pacific Field Guide. Frankfurt, Germany: IKAN - Unterwasserarchiv, ISBN 3-925919-69-4.
- Veron J.E.N., Stafford-Smith M.G., Turak E. and DeVantier L.M. (2016). Corals of the World