Where we encounter marine megafauna, we see only a tiny slice of their habitats and lives, which rarely includes feeding. These animals may travel thousands of feet vertically or migrate a few thousand miles horizontally to meet their nutritional needs. Some of them — sperm whales, for example — must do both: descend to depths of up to a mile or more to feast on aggregations of squid and roam across large swaths of the Pacific to avoid depleting their food resources in any one area.
No matter which alternate air source you choose, learn to calculate your air consumption and regularly practice emergency procedures. There are many ways to configure each type of redundant breathing-gas supply, but make sure your setup matches your training, gear arrangement and dive objectives. If a naysayer thinks your equipment choice is unnecessary, let them know that the difference between a fatal accident and an embarrassing incident could come down to a breath or two. Any redundancy is better than none.
The seven days in the Galápagos went by too quickly, and I was ready to come back before I had even left. The Galápagos National Park and the tour operators greatly respect the destination, and conservation is their primary goal. Even with all the protections in place, the fishing industry, climate change and ocean health pressure the archipelago. Every tourist dollar that goes into the Galápagos adds persuasive emphasis that this is a place that deserves ongoing and stringent protection.
Humpback whales feed in polar waters during the summer and then migrate to tropical or subtropical waters to breed during winter. Various locations offer seasonal whale-watching, but swimming with them is legal in only a few places — Tonga is one of them. Every year its warm and sheltered waters provide a nursery for the whales, which gather there between July and October after a long migration from Antarctica.
Pada kejadian yang merugikan, hampir selalu ada rangkaian dalam empat tahap: pemicu, agen yang melumpuhkan, cedera yang melumpuhkan, dan penyebab kematian. Secara individual, setiap kejadian dapat dihindari. Mengenali satu kejadian pada saat kejadian adalah kesempatan untuk bereaksi dan berusaha mengurangi risiko sebelum menjadi masalah. Dalam analisis akar penyebab kejadian buruk, faktor yang paling signifikan adalah kurangnya pengenalan dan kegagalan untuk bereaksi terhadap kejadian tersebut.
Calling a dive is not as easy as just giving the thumbs-up signal. There are steps to follow after the signal to cancel a dive. The dive briefing should cover these procedures, and the greater the dive’s potential risk, the more attention to detail the procedures and briefing should have to make calling the dive happen as safely as possible.
Fotografer bawah air terkadang mengacu pada zona air sempit di mana subjek membelah permukaan sebagai antarmuka Plimsoll. Di sini terdapat banyak kesempatan untuk pemotretan dinamis yang diperoleh dengan memiringkan kamera di atas atau di bawah garis air. Fotografer bawah air yang berdedikasi dan kreatif dapat menangkap bidikan split over-under tradisional dengan meniskus lurus standar dan pantulan dramatis dari bawah subjek, sinar matahari, atau keduanya sebagai bagian dari bidikan split yang dimodifikasi atau gambar sepenuhnya di bawah air.
Lebih dari 100 peserta magang selama lebih dari 20 tahun telah berpartisipasi dalam program magang DAN, bekerja dengan para mentor yang sudah mapan di bidang penelitian, mitigasi risiko, atau kedokteran untuk mendapatkan pengetahuan dan pengalaman profesional yang berharga sambil berkontribusi pada operasi DAN. Tahun ini, lima peserta magang melakukan perjalanan ke Durham, North Carolina, untuk berpartisipasi dalam program ini.
Audible cues and signals can get your buddy’s attention, signal a group of divers or indicate a problem you can help address. Even though we may dive to escape the noise of everyday life, we need to pay attention to the sounds around us. Doing so could make your dive even more special because your buddy got your attention to see something remarkable — or you may even save a life.
