Thai Dive Center เรียนดำน้ำ ทริปดำน้ำ อุปกรณ์ดำน้ำ ซ่อมบำรุงอุปกรณ์ดำน้ำ

26/05/2026

25-30 june 26 ไปดูโมล่ากันไหมคะ บาหลีๆๆๆ ช่วงนี้น้องขึ้นทุกวัน

07/05/2026

สิ่งน่าสนใจเยอะเลยค่ะ

What are amphipods and why are they important in the marine (and freshwater & some terrestrial) ecosystems?
🦐
This wonderful infographic by the Marine Biodiversity of Yucatán (BDMY) provides a heap of information combined with great graphic.
🦐
Amphipoda: The Shrimp-Like Crustaceans
🦐
Amphipoda, also known as scuds, side swimmers, or beachhoppers, are an order of malacostracan crustaceans. They are closely related to isopods, but differ in having three pairs of pleopods (abdominal appendages used for swimming) and three pairs of uropods (tail appendages) instead of two. Amphipods are also distinguished by their laterally compressed bodies and their lack of a carapace (hard outer shell).
🦐
Amphipods are one of the most diverse groups of crustaceans, with over 10,000 species described to date. They are found in almost all aquatic environments, from the deep sea to freshwater lakes and streams. Some amphipods have even adapted to life on land, where they are found in moist habitats such as beaches and forests.
🦐
Amphipods play an important role in the marine ecosystem as scavengers and detritivores. They feed on a variety of organic matter, including dead animals, algae, and bacteria. Amphipods are also a food source for many other animals, including fish, birds, and mammals.
🦐
Source:DOI 10.5281/zenodo.4737553
Also available in Spanish at https://www.bdmy.org.mx/que-es-bdmy

07/05/2026

What are marine polyclad flatworms and why are they some of the ocean’s most overlooked predators?
🌊🪱
This striking infographic by the Marine Biodiversity of Yucatán (BDMY) reveals a group of animals that are as beautiful as they are unusual. Polyclads are free-living flatworms within the phylum Platyhelminthes, and are commonly divided into two major groups, the Acotylea and Cotylea. More than 800 species are known worldwide. They range from just a few millimeters to nearly 30 centimeters in length. Their bodies are soft, thin, and often vividly colored, with patterns that can rival the most ornate reef organisms. Many species even mimic toxic nudibranchs, a clever form of defense in a world full of hungry fish, cephalopods, crustaceans and other predators.
🌊🪱 🍽️ 🐚 🦪🧽
Polyclads are active predators. They feed on bivalves, bryozoans, sponges, tunicates, and even giant clams and pearl oysters. To eat, they extend a tubular or ruffled pharynx from the underside of the body and draw in soft tissues. These flatworms live in complex habitats such as coral cavities, rocky crevices, algae beds, and sponge communities, from the surface down to depths of about 1,000 meters (≈ 3300 ft). They glide using cilia and undulating motions that ripple like fabric in water, giving them an almost hypnotic presence on the seafloor.
🌊🪱 🥚🤺
Reproduction among polyclads is as unusual as their appearance. Many are hermaphrodites and engage in a behavior known as cross insemination. In some species, individuals compete in “pen*s fencing,” where each attempts to inseminate the other while avoiding being inseminated themselves. The outcome determines which individual invests energy in producing eggs. Development may be direct, or include a planktonic larval stage that drifts before settling. Their eggs often contain toxins, adding another layer of defense during vulnerable stages of life.
🌊🪱🌍
Despite their beauty and ecological role, polyclad flatworms remain poorly studied. They serve as both predator and prey, likely consumed by fishes and other reef animals, though detailed records are limited. Their sensitivity to habitat loss, reef degradation, and ocean change is not well understood, and most species have not been formally assessed for conservation status. What is clear is that they are part of a hidden layer of biodiversity. They remind us that even in well-studied ecosystems, entire worlds of small, complex life remain just out of view.
🌊🪱🌍
Source: This Infographic is a product of BDMY (www.bdmy.org.mx) project, which was produced in collaboration with the Universidad Nacional Autónoma de México and A poco no.
Hernández, A., Ugalde, D., & Simoes, N. (2022). Polyclads. Zenodo. https://doi.org/10.5281/zenodo.7325204
https://doi.org/10.5281/zenodo.7325203

03/05/2026

น่ารักๆ

The Purple-tipped Janolus is a beautiful nudibranch often found crawling slowly along sandy seabeds and coral rubble. Its soft body is covered with finger-like cerata tipped with bright purple, which help it breathe and sometimes store defensive chemicals. These sea slugs feed mainly on tiny hydroids and other small marine organisms. Despite their delicate appearance, they are well adapted to survive in the colorful but competitive world of coral reef ecosystems. 🌊🐚

02/05/2026

น่ารักแบบสามัญๆๆ

The Sea bunny, scientifically called Jorunna parva, is a tiny species of sea slug found in the warm waters of the Indo-Pacific Ocean. Despite its cute appearance, it is a type of nudibranch, a group of soft-bodied marine mollusks. Its black “ears” are actually rhinophores used for smelling chemicals in the water. Sea bunnies feed on sponges and can absorb toxins, helping protect them from predators in the ocean.

01/05/2026

What are seahorses and why are they some of the ocean’s most unusual fishes?
🌊🐎
This detailed infographic by the Marine Biodiversity of Yucatán (BDMY) highlights just how strange and specialized these animals are. Seahorses belong to the genus *Hippocampus* within the family Syngnathidae, a group that also includes pipefishes and seadragons. They are found in tropical and temperate waters around the world, from the Atlantic to the Pacific. Most live in shallow habitats such as seagrass meadows, mangroves, coral reefs, and macroalgae beds, usually from the intertidal zone down to about 50 meters. Instead of scales, they have bony plates. They swim upright using their dorsal fin to move themselves forward and steer with their pectoral fins. The tail is prehensile and can grasp objects to anchor the fish in place.
🌊🐎🍽️🍤
Seahorses are ambush predators with a very particular feeding style. They lack teeth and a stomach. Instead, they use a tubular snout to suck in prey with surprising speed. Their diet includes copepods, small shrimp, amphipods, worms, and fish larvae. They rely on camouflage to survive, blending into their surroundings with color changes and skin filaments called cirri. Even so, they are prey for fishes, crabs, and other predators. In their ecosystems, they serve as both hunter and hunted, linking planktonic food webs to larger coastal communities.
🌊🐎
Reproduction is where seahorses truly stand apart. Females transfer eggs into a specialized brood pouch on the male. Fertilization and development occur inside this pouch, where the male regulates conditions for the embryos. After several weeks, he releases fully formed young into the water. Some species can produce hundreds of offspring in a single cycle. This reversal of typical reproductive roles remains one of the most remarkable strategies in the animal kingdom.
🌊🐎
Today, seahorses face growing challenges. Habitat loss, coastal development, pollution, and warming waters all take a toll. They are also collected for the aquarium trade, traditional medicine, and curios. According to the infographic, several species are listed as Vulnerable or Endangered. Their slow movement, small home ranges, and dependence on specific habitats make them especially sensitive to change. Seahorses may look delicate, almost whimsical, but their survival tells a deeper story about the health of coastal oceans.
🌊🐎
Source: 10.5281/zenodo.7324811
Also Available at https://zenodo.org/records/7324811

30/04/2026

Model ฉลามวาฬ พร้อมไฟเปลี่ยนสี มีสามสี ตัวใสสีทอง ตัวใสสีห้า และตัวเรืองแสง ราคา 699 บาท ไม่รวมส่ง สินค้าพรีออร์เดอร์นะคะ สนใจติดต่อสอบถามได้ค่ะ

24/04/2026

อัพเดท ทริป ปี 26

ทริปปี 26
30-31 พค —- ร้านเป็ด ร้านไก่ ชุมพร (เต็ม)
25-29 มิย —- บาหลี โมล่า แมนต้า
12-16 สค — หลีเป๊ะ เรือ อรุนา
27 สค-3(4) กย —- Alor (1 ที่ )
3- —-ใครตามมาบาหลีดำโมล่า แมนต้าได้
12-13 กย —-ร้านเป็ด ร้านไก่ ชุมพร

19/04/2026

รู้ไหม? ในมือของกุ้งตัวเล็กตัวหนึ่ง... มีพลังร้อนเท่าผิวดวงอาทิตย์!

ใช่ครับ คุณไม่ผิดอ่าน! ผมกำลังพูดถึง “กุ้งดีดขัน” หรือ Pistol Shrimp เจ้านักล่าตัวจิ๋วที่ดูบ้องแบ๊ว แต่ซ่อนอาวุธสุดอัศจรรย์ไว้ในก้ามเดียว

มันล่าเหยื่อด้วยวิธีที่ไม่เหมือนใคร: โดยการ “ดีด” หรือปิดก้ามข้างนึงอย่างรวดเร็วจนเกิด “ฟองอากาศระเบิด” (cavitation bubble) ความเร็วของการดีดนี้สูงมากจนน้ำรอบๆ ระเหยเป็นฟองอากาศ แล้วฟองนั้นก็ยุบตัวลงทันทีในเวลาเพียงเสี้ยววินาที

และนี่คือจุดที่มหัศจรรย์เกิดขึ้น! ขณะที่ฟองอากาศยุบตัว มันปลดปล่อยพลังงานออกมามหาศาล สร้างทั้ง:
1. เสียงดัง ถึง 218 เดซิเบล (ดังกว่ากระสุนปืน!)
2. คลื่นกระแทก ที่ทำให้เหยื่อสลบหรือตายได้ในทันที
3. ความร้อนสูงสุดชั่วขณะ ที่นักวิทยาศาสตร์วัดได้... ประมาณ 4,700 องศาเซลเซียส!

ตัวเลขนี้มันเท่ากับอะไรนะ? มันร้อนใกล้เคียงกับ อุณหภูมิที่พื้นผิวของดวงอาทิตย์ เลยทีเดียว (ซึ่งอยู่ที่ประมาณ 5,500 องศาเซลเซียส) แม้ความร้อนนี้จะเกิดขึ้นแค่เสี้ยววินาทีและอยู่ในพื้นที่เล็กจิ๋ว แต่มันก็เพียงพอที่จะทำให้น้ำรอบๆ เรืองแสงได้เลย (ปรากฏการณ์ที่เรียกว่าโซโนลูมิเนสเซนส์)

ลองคิดดูนะครับ สิ่งมีชีวิตขนาดไม่กี่เซนติเมตร ในท้องทะเล ใช้กลไกธรรมชาติสร้างพลังงานระดับดวงอาทิตย์ขึ้นมาได้ นี่ไม่ใช่เวทมนตร์ แต่มันคือฟิสิกส์อันน่าทึ่งที่ธรรมชาติออกแบบมา

โลกใบนี้ยังมีเรื่องน่าอัศจรรย์แบบนี้ซ่อนอยู่อีกมาก รอให้เราไปค้นพบ... ธรรมชาติมันสุดยอดจริงๆ ครับ!

#ความรู้กุ้งๆ #ธรรมชาติสุดอัศจรรย์ #ความร้อนระดับดวงอาทิตย์