With measured precision remotely operated vehicles D2 and Seirios are lowered into the deep blue waters of the Caribbean. Ready for the unknown, they begin the descent through the water column to the seafloor hundreds of meters below. February 18 marked the beginning of NOAA’s first expedition for this year – Océano Profundo: Caribbean Trenches […]
A new study by researchers at the University of Cambridge has shown that the dottyback, a small predatory reef fish, can change the colour of its body to imitate a variety of other reef fish species, allowing the dottyback to sneak up undetected and eat their young. Its Latin name, Pseudochromis, means false damselfish – […]
The number of US fish stocks listed as overfished, or subject to overfishing, has dropped to an all-time low since NOAA Fisheries began monitoring began in 1997. Their report, released this week, highlights the United States’ continued progress towards sustainably managing fish stocks. NOAA Fisheries maintain three lists: Overfishing, Overfished and Rebuilt. A fish stock […]
The ocean is vast and has been greatly explored in the last decades. But there is still much to be discovered. With clear plans for 2015, NOAA’s research vessel – the Okeanos Explorer – has already begun its field season and is currently mapping in the Caribbean. Last year saw two successful expeditions, one in […]
Brazil fisheries have no bag or size limits for any species of fish and even the most basic fisheries statistics, such as the numbers and weights of fish being caught, are a blank space. The newly published Red List of Brazilian species at risk from extinction, identifies 83 types of marine animal aslo commercially exploited by fisheries. The Galapagos shark is an example of a keystone species thought to have been fished to regional extinction due to decades of nonexistent fisheries regulations. This species is one of many that could have greatly benefited from management plans that help reduce by-catch and prevent the overexploitation of fishing stocks.
World Animal Protection are asking divers to report “ghost” fishing gear. They say that an estimated 640,000 tonnes of fishing gear is lost or abandoned in our oceans each year, entangling and killing millions of animals including seals, turtles and whales. When divers see or remove any ghost gear, they can upload their sighting which […]
When tunas dive down to cold depths their body temperature stays warm but their heart temperature can fall by 15 degrees within minutes. The heart is chilled because it receives blood directly from the gills which mirrors water temperature. This clearly imposes stress upon the heart but it keeps beating, despite the temperature change. In most other animals the heart would stop.
A recent stranding of a basking shark (Cetorhinus maximus) in north-western Bali is the first confirmed record of this large, filter-feeding shark species in Indonesian waters. The shark was an adult male. It is possible that the Indonesian throughflow – the warm ocean current which moves water from the Pacific to the Indian Ocean – is […]
Green sea turtles may stop basking on beaches around the world within a century due to rising sea temperatures, a new study suggests. Naturalists as early as Darwin observed beach basking in green turtles (Chelonia mydas). It helps the threatened animals regulate their body temperatures and may help their digestion and immune systems. After analysing […]
Mother turtles find their way back to nesting beaches by looking for unique magnetic signatures along the coast, according to a new study published in Current Biology. Loggerhead turtles, for example, leave the beach where they were born as hatchlings and traverse entire ocean basins before returning to nest, at regular intervals, on the same stretch of […]