Spain

  • A Snoot for my Underwater Flash

    A Snoot for my Underwater Flash

    It’s the light that makes a photograph. The principle also applies to underwater photography. Sunlight penetrates water. However, only twenty percent makes it to a depth of ten metres. Less than one percent of sunlight reaches the ocean at 100 metres depth.聽To make things more difficult, water filters the warmer side of the light spectrum […]

  • The Wreck of the Pe帽贸n

    The Wreck of the Pe帽贸n

    Wreck diving is fascinating in many ways: there’s the diving aspect, big underwater shapes are interesting to photograph, and last but not least the story behind a wreck is captivating to discover. The tugboat El Pe帽贸n served for 49 years in the port of Santa Cruz de Tenerife starting in the Fifties, when聽the port with […]

  • Hermit Crabs, The Home Swapping Club

    Hermit Crabs, The Home Swapping Club

    Hermit crabs are crustaceans that scavenge and inhabit the shells of molluscs, most often sea snails. Their abdomen is soft and exposed to predators. As the crab grows in size, it must find a larger shell to inhabit. Sometimes hermit crabs will compete for a desired shell. If a shell is too large for an […]

  • Blenny in a Bottle

    Blenny in a Bottle

    Blenny are small fish with characteristic faces with large eyes and mouths, some of them have antlers (cirri). Only a few centimetres long, they hide in rock holes or spend their time at the bottom of the ocean. A recent study described unique face markings on individual blennies (J Fish Biol 2016). In fact, you […]

  • Comb Jellies, Beautiful Aliens of the Oceans

    Comb Jellies, Beautiful Aliens of the Oceans

    Comb jellies, or ctenophora, are marine animals with gelatinous bodies. Comb jellies live in tropical and arctic waters, forming about 150 species. Although common, most people have never seen them.

  • Diving on the Volcano: El Baj贸n

    Diving on the Volcano: El Baj贸n

    El Baj贸n is an underwater mountain at the southern tip of El Hierro, the island that once was the end of the old world. Out of the deep blue, its steep rock faces rise from a hundred metres depth to a few metres below the ocean surface making the volcanic peak an thrilling dive spot. […]

  • Marine Life in El Hierro (Part 2)

    Marine Life in El Hierro (Part 2)

    This is the second article about scuba diving and marine life in El Hierro. The waters around La Restinga are a marine reserve, and underwater life is rich with diverse animals in the clear waters.聽There are triggerfish, pufferfish,聽parrotfish, zebra seabream, porcupinefish, trumpetfish,聽garden eel and moray eel,聽dusky grouper, barracuda, greater amberjack, red scorpionfish, slipper lobster, tube-dwelling […]

  • Marine Life in El Hierro (Part 1)

    Marine Life in El Hierro (Part 1)

    El Hierro sits on a ridge on the 3’500-metre-deep seabed, making it a dive spot with rich biodiversity. As marine biology is an overwhelming field, I’ve compiled a simplified and incomplete scheme. The abundant marine life in El Hierro can be classified into bony and cartilaginous fish, whales, crustacea, molluscs,聽Anthozoa (anemones, corals, and gorgonians), and […]

  • El Hierro, the Edge of the Old World

    El Hierro, the Edge of the Old World

    El Hierro once was the edge of the known world. The most western point of the Old World remained the meridian of zero longitude for many centuries 鈥 as defined by the Greek geographers Marinos of Tyre and Claudius Ptolemy in the first and second century. Only in 1482, Portuguese Diogo C茫o was the first […]