Whale watching in Gulf of Thailand - Bryde's Whale


Bryde's whale

Bryde's whale or the Bryde's whale complex (/bruːdə/brew-də) putatively comprises two species of rorqual and maybe three. The "complex" means the number and classification remains unclear because of a lack of definitive information and research. The common Bryde's whale (Balaenoptera brydei, Olsen, 1913) is a larger form that occurs worldwide in warm temperate and tropical waters, and the Sittang or Eden's whale (B. edeni, Anderson, 1879) is a smaller form that may be restricted to the Indo-Pacific.

Bryde's Whale

Also, a smaller, coastal form of B. brydei is found off southern Africa, and perhaps another form in the Indo-Pacific differs in skull morphology, tentatively referred to as the Indo-Pacific Bryde's whale. The recently described Omura's whale (B. omurai, Wada et al. 2003), was formerly considered a "pygmy" form of Bryde's, but is now recognized as a distinct species.

B. brydei gets its specific and common name from Johan Bryde, Norwegian consul to South Africa who helped establish the first modern whaling station in the country, while B. edeni gets its specific and common name from Sir Ashley Eden, former High Commissioner of Burma (Myanmar). Sittang whale refers to the type locality of the species. In Thailand, locals distinguished Sittang whales different from B.edeni, and it is unclear whether Sittang whales were applied for later classified Omura's whales by locals.

Bryde's Whale

Members of the Bryde's whale complex are moderately sized rorquals, falling behind sei whales, but being larger than Omura's whale and the relatively small minke whales. The largest measured by Olsen (1913) was a 14.95 m female caught off Durban in November 1912, while the longest of each sex measured by Best (1977) at the Donkergat whaling station in Saldanha Bay, South Africa, were a 15.51 m female caught in October 1962 and a 14.56 m male caught in April 1963; both were the offshore form.

At physical maturity, the coastal form off South Africa averages 13.1 m for males and 13.7 m for females, while the South Africa offshore form averages 13.7 and 14.4 m. The coastal form near Japan is slightly smaller, with adult males averaging 12.9 m and adult females 13.3 m.

At sexual maturity, males average 11.9 m and females 12 m near Japan. Sexual maturity is reached at 8–11 years for both sexes in the offshore form off South Africa. At birth, they are 3.95–4.15 m. The body mass of Bryde's whales can range 12–25 metric tons.

Bryde's Whale
Bryde's whale range


Bryde's whale is a baleen whale, more specifically a rorqual belonging to the same group as blue whales and humpback whales. It has twin blowholes with a low splashguard to the front. Like other rorquals, it has no teeth, but has two rows of baleen plates.

Bryde's whales closely resemble their close relative the sei whale. They are remarkably elongated (even more so than fin whales), with the greatest height of the body being one-seventh their total length – compared to 1/6.5 to 1/6.75 in fin whales and only 1/5.5 in sei whales. Bryde's are dark smoky grey dorsally and usually white ventrally, whereas sei whales are often a galvanized blue-grey dorsally and have a variably sized white patch on the throat, a posteriorly oriented white anchor-shaped marking between the pectoral fins, and are blue-grey beyond the anus – although Bryde's off South Africa can have a similar irregular white patch on the throat.

Whales of the world
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Bryde's have a straight rostrum with three longitudinal ridges that extend from the blowholes, where the auxiliary ridges begin as depressions, to the tip of the rostrum. The sei whale, like other rorquals, has a single median ridge, as well as a slightly arched rostrum, which is accentuated at the tip. Bryde's usually have dark grey lower jaws, whereas sei whales are lighter grey. Bryde's have 250–370 pairs of short, slate grey baleen plates with long, coarse, lighter grey or white bristles that are 40 cm long by 20 cm wide, while sei whales have longer, black or dark grey baleen plates with short, curling, wool-like bristles.

The 40 to 70 ventral pleats extend to or past the umbilicus, occupying about 58% and 57% of the total length, respectively; sei whales, though, have ventral pleats that extend only halfway between the pectoral fins and umbilicus, occupying only 45-47% of the total body length, whereas their umbilicus is usually 52% of the total body length. Both species are often covered with white or pink oval scars caused by bites from cookie-cutter sharks.

Bryde's whales have an upright, falcate dorsal fin that is up to 46.25 cm in height, averages 34.4 cm, and is usually between 30 and 37.5 cm. It is often frayed or ragged along its rear margin and located about two-thirds of the way along the back. The broad, centrally notched tail flukes rarely break the surface. The flippers are small and slender.

Their blow is columnar or bushy, about 3.0–4.0 m high. Sometimes, they blow or exhale while under water. Bryde's whales display seemingly erratic behaviour compared to other baleens, because they surface at irregular intervals and can change directions for unknown reasons.

They usually appear individually or in pairs, and occasionally in loose aggregations up to 20 animals around feeding areas. They are more active on water surface than sei whales, and this tendency becomes even stronger in coastal form.

They regularly dive for about 5–15 minutes (maximum of 20 minutes) after four to seven blows. Bryde's whales are capable of reaching depths down to 300 m. When submerging, these whales do not display their flukes. Bryde's whales commonly swim at 1.6–6.4 km/h, but can reach 19–24 km/h. They sometimes generate short (0.4 seconds) powerful, low frequency vocalizations that resemble a human moan.

From Wikipedia, the free encyclopedia



Blue divider

Sunday 24th of September 2017 and my alarm went off at 4 o'clock. The Driver and his 12 years old son was waiting at the parking lot when I came down. We left 5 minutes before 5 and we made a quick stop to buy some bread for lunch and some drinks. Empty roads and we had soon put Bangkok behind us and if we keep up the good work we will make it to Laem Pak Bia for 7 o'clock.

So we get time to see the whales before they are full of fish and swim out to take a rest until their next meal.

Early morning traffic in Bangkok
Bangkok early morning

We made 2 stops on the way and I was slumbering in the back seat when we approached Petchaburi. When I woke up we were in Petchaburi
- Where are you going? I asked
- Laem Pak Bia, this is the way
- NO NO, make a U-turn and go back!
- No, this is a good way
- GO BACK!
When he realised the seriousness we were already driving through the market in Petchaburi. I could not believe my eyes.
- We were at Laem Pak Bia 2 days ago and we never drove through any city! I said.

We were soon on the Ratchadamngoen Road and we took off when we reached road # 3177 and now I could relax. Now it was next to impossible to miss the whale watching boat. We arrived to the Laem Pak Bia and we were soon on board the boat. We were joined by 2 more children and another whale watcher. We were ready for the fun to begin.

Whale watching in Gulf of Thailand - Bryde's Whale
We are ready for the Bryde's whale

Whale watching in Gulf of Thailand - Bryde's Whale
We're meeting a fishing boat

Whale watching in Gulf of Thailand - Bryde's Whale

Whale watching in Gulf of Thailand - Bryde's Whale
Another whale watching boat

Whale watching in Gulf of Thailand - Bryde's Whale
We can see the splash from far away

We were steaming for 2 hours as usually and we didn't spotted any whales. Captain got a message on the radio, there was another whale watching boat and they had a whale. We speeded up and we
Tail Slap (Lobtailing)

The whale lifts its tail clear of the water and slaps it on the water surface. To do this the whale usually hangs vertically in the water with just its tail above the surface, it then uses its muscular tail to beat the water, whereas Dolphins tend to remain horizontal to the water surface.

Tail slapping may be to communicate with other whales nearby, scare prey, defence or display.
drove towards the other whale watching boat. I was told that it was a mother and a baby.

We could see the splash when we were approaching, but still too far away. When we came close I could see that the Bryde's whale were doing a tail slap.

And yesterday I was reading “The broad, centrally notched tail flukes rarely break the surface” and today I see a Bryde's whale behaving like a Humpback whale, the rascal of the seven seas. So this was a show we appreciated.

And I think it was because the whale wanted to kill the fish as the whale circled around when the fish was ready with the tail slap. And there was a lot of Terns flying around catching the fish.

Whale watching in Gulf of Thailand - Bryde's Whale
Bryde's whale tail slap!

Whale watching in Gulf of Thailand - Bryde's Whale
Bryde's whale tail slap!

Whale watching in Gulf of Thailand - Bryde's Whale
Bryde's whale tail slap!

Whale watching in Gulf of Thailand - Bryde's Whale
Bryde's whale tail slap!

Whale watching in Gulf of Thailand - Bryde's Whale

Whale watching in Gulf of Thailand - Bryde's Whale

Whale watching in Gulf of Thailand - Bryde's Whale

Whale watching in Gulf of Thailand - Bryde's Whale

Whale watching in Gulf of Thailand - Bryde's Whale

Whale watching in Gulf of Thailand - Bryde's Whale

Whale watching in Gulf of Thailand - Bryde's Whale

Whale watching in Gulf of Thailand - Bryde's Whale

Whale watching in Gulf of Thailand - Bryde's Whale

Whale watching in Gulf of Thailand - Bryde's Whale

Whale watching in Gulf of Thailand - Bryde's Whale

Whale watching in Gulf of Thailand - Bryde's Whale

Whale watching in Gulf of Thailand - Bryde's Whale

The day, well, it started bad, but I was happy when we steamed back towards Laem Pak Bia. The whale had put on a show for us and I had enjoyed the day. And to bring some bread was a very good idea. The other whale watcher had brought food for us, but I prefer my bread.

And we arrived to Laem Pak Bia at low water and we had many birds on the mud flats. I will come back here for some bird watching. Rent the small boat for a few hours and to go around the mud flats taking pictures. Bee-eaters and Kingfishers, and of course all the shore birds.

Whale watching in Gulf of Thailand - Bryde's Whale
Great Egret / Great White Heron

Great Egret / Great White Heron
Great Egret / Great White Heron

Back in Bangkok, we had very heavy in bound traffic so it took us quite some time to get in to town. I asked the driver to stop at an Italian restaurant, luckily enough I changed my mind and I had fruit salad when I was back home.

Well, this is pretty much it from Bangkok. I will go to Bangkok Bank main office tomorrow to see if I can get 3500 NZ Dollars and then my last boxing session before I'm off to New Zealand, Fiji and Tonga. If you click HERE you will find yourself in the middle of that adventure.

I will soon be on Tonga to swim with the Humpback whales


Blue divider

                  
OK, it has come to my knowledge that we have senior citizens visiting my web page. How hard can it be? So it's not very easy for them to see the blue coloured links to the next page.
Jiffy (also jiff)

noun [in SING.] informal a moment: we'll be back in a jiffy.

ORIGIN late 18th cent.: of unknown origin.

So as you understand, in a jiff pretty much depends on your internet.
So I put a “Next” button here and I hope that there isn't any problem to understand how to use that one. So just CLICK the “Next” button on your left hand side and you will be on the next page in a jiff!

Marunong ka mag-tagalog? Walang problema! Magpunta sa kabilang pahina pindutin ang “NEXT” button sa itaas

Faites vous parlez le français? Pas de problème! Pour arriver à la page suivante faites s'il vous plaît un déclic le bouton “Next” ci-dessus!

Haga usted dice el español? No hay problema! Ver la siguiente página sólo hacer clic el botón “Next” encima!

Farla parla l'italiano? Non problemi! Per vedere la prossima pagina lo scatto per favore giusto Il bottone “Next” sopra

Sprechen sie Deutsch! Kein problem! Wenn Sie die folgende Seite sehen wollen gerade klicken der Knopf “Next” oben!

คุณพูดภาษาไทยได้ไหม ไม่มีปัญหา ถ้าคุณต้องการไปหน้าถัดไป ให้กดปุ่ม “Next” ข้างบนนี้

Вы говорите по-русски? Просто нажмите синюю кнопку "Next" с левой стороны и Вы моментально переместитесь на следующую страницу!

E ni Svenskar och inte förstår Engelska så ska ni skämmas. J och Björn, med det menar jag inte att alla mina stavfel ska ältas varje gång vi träffas.

Flag of Skåne / Skånska flaggan Well, the flag of Skåne, just a BONUS flag.



                  

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