During a recently completed 18-day expedition in the protected Ashmore Reef Marine Park (off of Australia), scientists aboard a Schmidt Ocean Institute exploration vessel dropped an underwater robot into deep, low-light depths. At some 165 to 500 feet down (50-150 meters), it observed otherworldly corals, sea snakes, and a diversity of sea creatures, shown in the eight images below.
Beneath the surface of Lake Mead, located 35 miles southeast of Las Vegas, Nevada, a world unfolds in shades of teal. Palm-sized bluegill fish nibble the meat from cracked mussels, natural stone spires rise from the depths and shipwrecks slump along the silt bottom. But the lake also hides an array of historic landmarks that only scuba divers can visit: the remains of the massive Depression-era construction project that built the Hoover Dam, including cement tunnels and railroad tracks now decaying in the dark.
Depth Hunter 2: Deep Dive Full Crack [crack]
Download File: https://8novacxcespe.blogspot.com/?file=2vIRl8
Still, as we sankbelow the surface, there was plenty to see. The tiered ground beneath the tank wasbusy with fish accustomed to the sight of scuba divers. Duckro grabbed a coupleof the invasive Quagga mussels that have infiltrated the lake and held theircracked shells out on an open palm. The fish darted in for timid tastes as wewatched, wide-eyed. On the silt floor some 30ft down, train tracks stretchedinto the murky distance.
The Humboldt squid's diet consists mainly of small fish, crustaceans, cephalopods, and copepods. The squid uses its barbed tentacle suckers to grab its prey and slices and tears the victim's flesh with its beak and radula. They often approach prey quickly with all 10 appendages extended forward in a cone-like shape. Upon reaching striking distance, they open their eight swimming and grasping arms, and extend two long tentacles covered in sharp hooks, grabbing their prey and pulling it back toward a parrot-like beak, which can easily cause serious lacerations to human flesh. These two longer tentacles can reach full length, grab prey, and retract so fast that almost the entire event happens in one frame of a normal-speed video camera. Each of the squid's suckers is ringed with sharp teeth, and the beak can tear flesh, although they are believed to lack the jaw strength to crack heavy bone.[19]
This is a valuable course for divers who like to dive on the deeper end of the recreational limits. The Deep Diving specialty is intended to provide students with the knowledge and skills to safely conduct open water dives between 60 and 130ft. The skills learned and practiced will help you better understand and practice dive planning/execution at greater depths, proper deployment of an underwater surface marker buoy, and calculation of your surface air consumption rate. If you have a full gear already you can also get a $20 discount.
The dive site itself it outside the Corsair, a little closer to China Walls. Imagine a series of reef fingers each one 100-200ft wide at the base that come to a point or curve on the outside. The tops of those finger vary from 110ft to 120ft for the most part, and at the end of the finger there is a ledge that drops 10 to 20ft. Most of the overhanging ledges under those finger are beyond the 130ft recreational depth. In between the fingers are sand channels that also get deep. One of the 10+ fingers that is down there is known as Split Rock for the giant crack in the end of the finger that has fallen down. Surrounded by giant schools of snappers. Staff dive on March 2nd 2022 saw large parrotfish, lots of wire and black coral, ulua, big eye emporer, monster eels, penant butterly and moorish idols school, and strong current.
Because we will be doing dives deeper than 60ft all in the same day, we will be reaching our no decompression limits very quickly. To help alleviate this, we recommend doing 2 of the dives on a nitrox 32% blend. This will help to keep us in the water longer, and reduce the impact of nitrogen narcosis, which we will cover more during the course. Diving on nitrox can also reduce tiredness post-dive, which can add up on a 3 dive day. However, the third dive is at the limits of nitrox, we may be able to blend a mix to get you to max depth.
In the Atlantic Ocean, a majestic minke whale comes up for air. As she breaches the surface, an explosive crack sounds, and then a thud as the harpoon slams into her head, penetrating half a metre deep. As the defenceless whale tries to pull away, terrified and in agony, the grenade inside the harpoon explodes, blasting shrapnel into her body. If she is lucky, she dies quickly, but often it takes up to an hour or more. This awful scenario is repeated in all the oceans of the world where whales are hunted. It has to stop.
Whatever causes underwater nosebleeds struck me during a morning dive. The boat had taken us out to "Calvin's Crack," a gorgeous though somewhat oddly named dive site that's indeed a narrow crack in the reef (it was likely named after Calvin Bodden, friend of CoCo View founder Bill Evans). It descends all the way from a fairly shallow entrance area at maybe 30 feet of water to an opening to the ocean deep in the wall. The entrance is like a cave or cavern and you go in head-first, but it's not really an overhead environment as light remains visible through the top of the crack at all times.
It is a wonderfully eery experience floating downward between walls of sheer rock to the left and right, from 30 feet to perhaps 80 or 90, with beams of light from the surface shining down from between the cliffs, and air bubbles from divers ahead of you rising in a silvery stream. Diving the crack is like floating through a rugged, narrow canyon with just enough room for a single diver. The sandy bottom of the crack descends until it opens on the side of the wall into the blue ocean at a depth of anywhere from 60 to 100 feet. I'd been nervous again before the dive, of course, but felt just fine going into and through the crack. It was all totally new to me and so I composed myself and finned through, not taking nearly enough time to look around and take it all in.
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