The geographic cone snail, Conus geographus, is native to tropical coral reefs in the Indian and Pacific oceans. (Image: Cone Snail/YouTube)
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Wrecks
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Photo: Snapshot/NBC video
Even creepier than the catfish that hunts pigeons on land, is the toothy northern snakehead, a carnivorous fish that grows to at least three feet in length, can breathe air and can survive for up to four days out of water. It can survive for even longer periods in mud and moist environments. Oh, and it travels over land by wriggling its body along the ground.
Just before the 70th anniversary of the D-Day invasion on June 6, PBS' "Nova" will debut the new documentary "D-Day's Sunken Secrets" on May 28, following an expedition to locate the wrecks of the ships that were so instrumental in the battle to better understand what happened and why.
SCUBA diving and snorkelling are amongst the fastest growing tourism sectors. The increasing numbers mean many more people are aware of the beauty and importance of the marine environment, but also puts a great strain on the coral. Not only is it damaged by inexperienced divers kicking it and pollution from boats and hotels, research also shows that coral is much more likely to become diseased in highly dived areas.
Lionfish, genus Pterois, is very popular amongst those with aquariums, and this trade may have led to them being described as amongst some of the most aggressively invasive species on the planet. Lionfish are native to the Red Sea, Pacific Ocean, and Indian Ocean, most often found around corals, reefs and rocky surfaces down to about 50 m. They have quite a distinctive appearance with their red and white stripes, together with large spiky dorsal fin rays containing venom for defense against predators. They don’t appear to have many natural predators, but large Groupers and Moray eels have been observed feeding on them.
