Sea Pearl, Seychelles, Summer Cruise, SAVE 20% for any booking made before the 31st January 2023 for 6 night trips in the May-October cruise season 2024. Price from EUR 1,044 per trip per person
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Creature of the month is Sabre Squirrelfish, Sargocentron spiniferum
Sabre Squirrelfish. Also known as Giant Squirrelfish or Long-Jawed Squirrelfish. Photo: Tim Nicholson
The largest of all the squirrelfish, you see this in the Indo-Pacific including the Red Sea and East Africa. A member of the Holocentridae family, squirrelfish have large eyes and are nocturnal. During the day you'll find them under ledges and in caves, away from the light. Growing up to 45 cm, they live alone or in small groups. You can distinguish Sargocentron spiniferum from other squirrel fish by the red blotch behind its eye.
Easyily seen by divers but hidden from other fish
Like many nocturnal fish, Sargocentron spiniferum is red. To us it is easy to spot during the day, but to other fish it blends into its dark crevice or cave. Long red light wavelengths don't penetrate water well, so fish colour vision tends to be tuned to the shorter, blue and ultra-violet end of the spectrum. This means that red and pink fish are inconspicuous.
Shark shock - scientists discover filter-feeding basking sharks are warm-bodied Approximately 99.9% of fish and shark species are "cold-blooded", meaning their body tissues generally match the temperature of the water they swim in - but researchers have just discovered the mighty basking shark is a one-in-a-thousand exception.
Scientists: Fishing boats compete with whales and penguins for Antarctic krill Scientists and campaigners recently documented huge krill fishing vessels plowing through pods of whales feeding in Antarctic waters, a permitted practice they say deprives the whales of food. As Antarctic waters warm due to climate change, krill numbers are declining, stressing wildlife that rely on the small crustaceans at the bottom of the food chain.
Deep-sea expedition reveals rare octo-nurseries off Costa Rica A scientific expedition in June found two new deep-sea octopus nurseries on two different low-temperature hydrothermal vent sites off the west coast of Costa Rica - two of only three known deep-sea octopus nurseries in the world.
At sea as on land? Activists oppose industrial farming in U.S. waters Aquaculture produces more than half of the world's seafood, mostly in inland and coastal waters. Industrial finfish aquaculture, such as salmon farming, accounts for just a fraction of that production, and comes with a host of negative environmental impacts.
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Photo credits:DepositPhotos, Tim Nicholson, Jill Studholme, David Collins
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