Shark Teeth

Shark Toothache

Researchers from North Carolina State University and the North Carolina Museum of Natural Sciences have studied a deformed tooth from the extinct giant shark Otodus megalodon (used to be Carcharodon megalodon)and compared it with similarly deformed teeth from a shark named Carcharhinus leucas, which still lives today. The teeth all show a “double tooth pathology” […]

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Salmon in River

Melting Glaciers Make More Salmon Rivers

Glaciers in the Pacific Northwest of USA and Canada are melting and turning into streams of flowing fresh water. Scientists from the University of Birmingham have studied some of these new rivers and found salmon had colonised them when migrating from the ocean into rivers in order to spawn. These scientists have joined with Kara […]

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Seahorse

Seahorse Suction Power

Seahorse suction power revealed in reports in Inside JEB 3 September 2021 and Journal of Experimental Biology 3 September 2021, doi: 10.1242/jeb.236430. Seahorses use suction feeding to draw food in which involves a rapid expansion of their mouth cavity to force food into the mouth. Other kinds of ‘sucking’ fish use their swimming muscles to […]

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Shark

Megashark Gets More Mega

Megashark gets more mega, according to Science Alert and SciTechDaily 9 June 2021, and Palaeontologia Electronica DOI: 10.26879/1140. The size of the extinct giant fossil shark now named Otodus megalodon (used to be Carcharodon) has been re-estimated using the size of its teeth compared with teeth from the living Great White shark, then using the […]

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Fish Fins

Fish Fins Forming Limbs

Fish fins forming limbs found, according to articles in BBC Science Focus and ScienceDaily 4 February 2021 and Cell 4 February 2021 doi: 10.1016/j.cell.2021.01.003. Scientists at Harvard and Boston Children’s Hospital have found mutations of two genes that result in the formation of extra bones in the pectoral (front) fins of zebrafish.  Zebrafish are ray-finned […]

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Coelacanth

Giant Fish Fossil Found With Pterodactyl

Giant fish fossil found with pterodactyl, reported by University of Portsmouth news and PhysOrg 15 February 2021, ScienceDaily 16 February 2021, and Cretaceous Research published online 23 January 2021 doi: 10.1016/j.cretres.2021.104768.  Scientists from University of Portsmouth were asked to identify a fossil bony structure found with a group of wing bones from a pterosaur.  The […]

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Shark

How Big is a Mega Shark?

How big is a mega shark? Really huge, according to reports in ScienceDaily 3 September 2020, SciTech Daily 4 September 2020 and Scientific Reports, 3 September 2020; doi: 10.1038/s41598-020-71387-y. Because sharks have a skeleton made of cartilage, rather than bone, fossils of whole sharks are very rare, so it is difficult to estimate their exact […]

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Lionfish

Reef Expert Spots Fish Fakes

Reef expert spots fish fakes, according to a report in Science (AAAS) News 25 September 2019. Peter Ridd, a marine scientist who was dismissed by James Cook University (JCU) for criticising the quality of research into coral reef bleaching, has examined photos used in a study of zebra lionfish social behaviour and found that photos […]

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Sharks

Fossil Suction Feeding Surprise

Fossil suction feeding surprise reported ScienceDaily 11 September 2019 and Science Advances 11 September 2019, doi: 10.1126/sciadv.aax2742. Bony ray-finned fishes, such as bass, perch and carp, feed by using a method called suction feeding, where they are able to catch prey by sucking water into their mouths and then funnelling the water out through their […]

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School of Fish

Fossil School of Fish

Fossil school of fish found and described in Science Alert and Live Science 30 May 2019, and Proceedings of the Royal Society B 29 May 2019 doi: 10.1098/rspb.2019.0891. Researchers from Arizona State University and Mizuta Memorial Museum have studied a 57cm x 37.5cm (22.4 x 14.8 inches) slab of “greyish limestone shale” containing the fossils […]

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