We know whale sharks (Rhincodon typus), the biggest fish in the world, aggregate at just 20 coastal locations globally. Why these animals, which can reach more than 18 m in length, choose these specific places, has perplexed researchers and conservationists. Although whale-shark aggregations had been recorded near tropics, including Mozambique, the Maldives, Honduras, Australia and others places, what causes these aggregations remain unknow.
Aggregations typically occur in the fore reef and lagoon areas, leading out to the reef slope, reef wall or continental slope, which has a steeper slope, leading whale sharks to deep-sea environment. Researchers sugests whale shark can filter food at greath depths, where the water is cold, and then bask in the sun at shallow depths, warming their cold-blooded bodies, as they depend on external sources of body heat.
- Location of aggregation and non-aggregation sites. Hotspots are in red.
These places are very productive, where plankton and small crustaceans abound. However, sharks swimming in shallow waters near the surface are vulnerable to accidents caused by vessels, as tourist boats which approaches them. The whale shark is considered Vulnerable on the IUCN Red List, these findings increase our understanding of whale shark behaviour and may help guide the identification and conservation of further aggregation sites.
Photo by Abe Khao Lak
Copping et al., 2018. Does bathymetry drive coastal whale shark (Rhincodon typus) aggregations? Aquatic Biology section
With Stephen Hawking’s passing, today is a sad day for science. But amongst all his praise and achievements in the fields of physics, for me personally his biggest achievement was making a grand, full life despite the terrible misfortune of being diagnosed with ALS. It would have been easy to become a recluse, embittered with the hand he’d been dealt, a brilliant misanthrope. But this was a man who maintained his sense of humor and refused to be mentally beaten. Three years ago, he told One Direction fans that the theory of alternate universes could provide a reality where Zayn Malik was still in the band. He conducted an interview with John Oliver where his factual, deadpan delivery was funnier than his interviewer, managing the cheekiest grins as he did so. And let us not forget that Stephen Hawking is the only person to have ever portrayed themselves in a Star Trek episode (Next Generation, “Descent, Part 1″), where he appeared alongside actors portraying Einstein and Sir Isaac Newton, whom he proceeded to defeat in poker.
Hawking’s observations on black hole radiation, string theory, alternate universes and artificial intelligence are things that will probably forever remain beyond most of us. But we could all learn a thing or two from his humanity.
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The National Science Foundation (NSF)—the major funding agency for basic science—has canceled all grant review panels this week to comply with an executive order from the new administration. This is where independent panels of scientists discuss grant proposals they’ve reviewed for scientific merit and recommend which projects get funded to NSF project managers. A LOT of work goes into setting up and scheduling grant reviews. It will take time to reschedule these panels, delaying key decisions for many promising projects. This will wreak havoc on science grant funding for months to come.
Put simply, this action along with the halting of NIH-funded grants are blatant and reckless political attacks on science, from an administration that seeks blinding loyalty.
Shark Week Takeover with photos by @BrianSkerry ! • • • Like a living wreath, small fish encircle the head of a whale shark cruising through coastal waters off Mexico’s Isla Holbox. The small fish have little to fear from this shark, since whale sharks are filter feeders, eating mainly plankton and fish eggs. Whale sharks are currently listed as ‘vulnerable’ due to human pollution and hunting, and populations remain unstable due to the slow reproductive habits of these magnificent creatures.
Swimming with whale sharks is one of my favorite experiences in the sea. Their massive size and gentle nature make for exhilarating encounters. • • • To see more shark photos and other ocean wildlife follow @BrianSkerry And keep following our feed all week to keep up with Brian Skerry’s very sharky takeover! #takeover #sharks #sharkweek #sharkweek2018 #allsharksallthetime #newenglandaquarium
Blog dedicted to phytoplankton. Phytoplankton are microscopic organisms that are responsible for half of the photosynthesis that occurs on Earth. Oh, and they look like art... Follow to learn more about these amazing litter critters! Caution: Will share other ocean science posts!Run by an oceanographer and phytoplankton expert. Currently a postdoctoral researcher.Profile image: False Colored SEM image of Emiliania huxleyi, a coccolithophore, and the subject of my doctoral work. Credit: Steve Gschmeissner/ Science Photo Library/ Getty ImagesHeader image: Satellite image of a phytoplankton bloom off the Alaskan Coast, in the Chukchi SeaCredit: NASA image by Norman Kuring/NASA's Ocean Color Web https://earthobservatory.nasa.gov/images/92412/churning-in-the-chukchi-sea
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