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Human footprint along marine ecosystems  

  Evidences accumulated over the last few decades reveal a growing human impact on marine ecosystems, but effects on biological communities are still largely unknown. Human activities such as fisheries, urban development, tourism, and maritime traffic, greatly influence distribution and quantity of marine litter from shores to deeper regions of continental margins, where may enter directly through a wide variety of maritime activities including disposal (e.g. Continue reading →

Fish diversity in the one of earth’s least explored environments: the mesopelagic zone

The mesopelagic zone comprises the entire water column intermediate from the epipelagic zone (up to 200 m depth) to the deep pelagic layers (bathypelagic zone), located ca. 1000 m depth extending down to 4000 m. Also defined as twilight zone, the mesopelagic zone is the transition from the upwards-epipelagic photic zone to the deep aphotic zone, where the sunlight is completely absent. Continue reading →

Red-Seeing Fish, Blue-Seeing Fish: Deep-Sea Vision Evolves

Talking about glowing sharks, here it is a very cool text published in the live science blog. "Fearsome-looking creatures that live in the near-dark to pitch-black waters of the deep sea, dragon fish wouldn't seem to have much need for eyes, let alone the ability to see color. However, some dragon fish have rapidly evolved from blue-light sensitivity to red-light sensitivity, and then back to blue again. Continue reading →