🇰🇷🇺🇸 UCSD Marine Biology '25 | CSUMB Science Illustration Program '26 Twitter/Instagram: CJSeaArthttps://bsky.app/profile/cjsea.bsky.socialhttps://bsky.app/profile/cjsea.bsky.social/post/3luyn2zstis2u#SharkWeek BONUS! The cast of sharks and rays in the Marine Protected Areas of southern California hold a special place in my heart and to celebrate my last year of university here I spent weeks on this mural (inspired by Joschua Knuppe) of the native species I've come to love!28 Jul 2025 03:19 +0000at://did:plc:tocdtvfugquofgnyn4tphmkf/app.bsky.feed.post/3luyn2zstis2uhttps://bsky.app/profile/cjsea.bsky.social/post/3luvgiqj2z227#SharkWeek2025 Day 7: Dasmyliobatis thomyorkei Despite appearing like a generic ray, Dasmyliobatis represents an intermediary state between the eagle rays and whiptail rays (or what many consider stingrays). The holotype was discovered in Italian rocks dating to the Eocene.26 Jul 2025 20:43 +0000at://did:plc:tocdtvfugquofgnyn4tphmkf/app.bsky.feed.post/3luvgiqj2z227https://bsky.app/profile/cjsea.bsky.social/post/3luqfvqqbjk23#SharkWeek2025 Day 5: Galagadon nordquistae Named after its teeth that resemble the spaceships in Galaga, this holotype of this freshwater carpet shark was famously discovered near the remains of Sue the T.rex. Unlike the giant dinosaur, Galagadon only was about a foot or so long.24 Jul 2025 20:49 +0000at://did:plc:tocdtvfugquofgnyn4tphmkf/app.bsky.feed.post/3luqfvqqbjk23https://bsky.app/profile/cjsea.bsky.social/post/3luonm3i3wk2q#sharkweek2025 Day 4: Rolfodon goliath An extinct relative of modern frilled sharks, R.goliath was discovered to be from the Late Cretaceous of Angola, and lives up to its species name: potentially growing up to 6 meters (or almost 20 feet) long!24 Jul 2025 04:02 +0000at://did:plc:tocdtvfugquofgnyn4tphmkf/app.bsky.feed.post/3luonm3i3wk2qhttps://bsky.app/profile/cjsea.bsky.social/post/3lul5p2soes2d#SharkWeek2025 Day 3: Metopacanthus granulatus Despite looking like it has two mouths, the upper appendage of this Jurassic chimaera relative is likely a head clasper, which is used in holding onto females during reproduction, supported with en elongated cartilaginous rostrum!22 Jul 2025 18:39 +0000at://did:plc:tocdtvfugquofgnyn4tphmkf/app.bsky.feed.post/3lul5p2soes2dhttps://bsky.app/profile/cjsea.bsky.social/post/3luj6prpv6k25#SharkWeek2025 Day 2: Iniopteryx rushlaui This strange animal superficially resembles flying fish, but is actually more related to the modern day chimaera. Found in warm shallow Carboniferous seas, this fish grew just over a foot long, and used its large pectoral fins for locomotion.21 Jul 2025 23:52 +0000at://did:plc:tocdtvfugquofgnyn4tphmkf/app.bsky.feed.post/3luj6prpv6k25https://bsky.app/profile/cjsea.bsky.social/post/3lugax3l3k227#SharkWeek2025 Day 1: Acanthodes bronii Part of the acanthodiians, or "spiny sharks", this Permian fish is believed to provide insight into the common ancestors of both cartilaginous and bony fish. Acanthodes was found to be toothless and thus could have been a suspension feeder!20 Jul 2025 19:54 +0000at://did:plc:tocdtvfugquofgnyn4tphmkf/app.bsky.feed.post/3lugax3l3k227https://bsky.app/profile/cjsea.bsky.social/post/3lq3oizkqmk2tSome sketches I did while watching the new #WalkingWithDinosaurs202526 May 2025 17:17 +0000at://did:plc:tocdtvfugquofgnyn4tphmkf/app.bsky.feed.post/3lq3oizkqmk2thttps://bsky.app/profile/cjsea.bsky.social/post/3lpv7ljuz7s24A practice sketch of a fisherman catching a small Clavusodens.24 May 2025 03:34 +0000at://did:plc:tocdtvfugquofgnyn4tphmkf/app.bsky.feed.post/3lpv7ljuz7s24https://bsky.app/profile/cjsea.bsky.social/post/3lpupbldaa22uTraskasaura sandrae, a newly described genus and species of basal elasmosaurid, from Early Cretaceous British Columbia that shares several morphological convergences with the later derived aristonectiines.23 May 2025 22:42 +0000at://did:plc:tocdtvfugquofgnyn4tphmkf/app.bsky.feed.post/3lpupbldaa22uhttps://bsky.app/profile/cjsea.bsky.social/post/3lpqg35ikok2eGadusaurus, a recently described species of ichthyosaur from the Early Jurassic of Portugal.22 May 2025 05:46 +0000at://did:plc:tocdtvfugquofgnyn4tphmkf/app.bsky.feed.post/3lpqg35ikok2ehttps://bsky.app/profile/cjsea.bsky.social/post/3lp5sos4rjs2bA sketch of the recently published paper's describing of Pararhincodon torquis, a stem-parascylliid related to modern day collared carpetsharks, found in the Cretaceous Chalk of the UK.14 May 2025 20:12 +0000at://did:plc:tocdtvfugquofgnyn4tphmkf/app.bsky.feed.post/3lp5sos4rjs2bhttps://bsky.app/profile/cjsea.bsky.social/post/3loyt73x42k2nAn illustration of the Eocene fish, Dibango volans. A fish of unknown placement, it's anomalous features appear similar to that of larval teleost fishes, but had levels of ossification on the bones akin to adults, leading to a possibility of a paedomorphic fish.12 May 2025 20:37 +0000at://did:plc:tocdtvfugquofgnyn4tphmkf/app.bsky.feed.post/3loyt73x42k2nhttps://bsky.app/profile/cjsea.bsky.social/post/3ll62cpbhec2nA practice sketch of a breaching Helicoprion, also known as the buzzsaw shark, despite being a holocephalid, or being related to modern day chimaera.25 Mar 2025 00:47 +0000at://did:plc:tocdtvfugquofgnyn4tphmkf/app.bsky.feed.post/3ll62cpbhec2nhttps://bsky.app/profile/cjsea.bsky.social/post/3lkuk5w33uk23Practicing better lighting and water effects with an illustration of a Spinosaurus snacking on a small Concavodectum. This turned out amazing and I'm 95% happy with how it turned out!!21 Mar 2025 06:04 +0000at://did:plc:tocdtvfugquofgnyn4tphmkf/app.bsky.feed.post/3lkuk5w33uk23https://bsky.app/profile/cjsea.bsky.social/post/3lkue7dccec2rA quick sketch of the newly announced two-clawed therizinosaur Duonychus tsogtbaatar.21 Mar 2025 04:18 +0000at://did:plc:tocdtvfugquofgnyn4tphmkf/app.bsky.feed.post/3lkue7dccec2rhttps://bsky.app/profile/cjsea.bsky.social/post/3lkue6rlml22rThe longfin greeneye is a species of lizardfish found in Antarctic waters. Its genus name, Lagiacrusichthys, refers to a popular Leviathan from the Monster Hunter game series. Its large upward-facing eyes are used to detect bioluminescent prey in the deep.21 Mar 2025 04:17 +0000at://did:plc:tocdtvfugquofgnyn4tphmkf/app.bsky.feed.post/3lkue6rlml22rhttps://bsky.app/profile/cjsea.bsky.social/post/3lkue5itk422rClavusodens mcginnisi is a new genus of petalodont, a relative of modern day chimaera. Known from teeth dating from Carboniferous rocks in Mammoth Cave National Park, this cartilaginous fish lived in shallow seas, where they likely lived similar to modern triggerfish.21 Mar 2025 04:17 +0000at://did:plc:tocdtvfugquofgnyn4tphmkf/app.bsky.feed.post/3lkue5itk422rhttps://bsky.app/profile/cjsea.bsky.social/post/3lkue3qcekc2rAnother practice sketch, this time of the unique mosasaur Megapterygius! Found in rocks in Japan dating to the Late Cretaceous, it is rather the interesting case with evidence of a dorsal fin, and the only known mosasaur to have one!21 Mar 2025 04:16 +0000at://did:plc:tocdtvfugquofgnyn4tphmkf/app.bsky.feed.post/3lkue3qcekc2rhttps://bsky.app/profile/cjsea.bsky.social/post/3lkue336sf22rA quick sketch of a Platypterygius, a paraphyletic genus of Cretaceous ichthyosaur that contains numerous species. No particular species was used as reference, but I did use a Hector's dolphin as reference for the colors.21 Mar 2025 04:15 +0000at://did:plc:tocdtvfugquofgnyn4tphmkf/app.bsky.feed.post/3lkue336sf22rhttps://bsky.app/profile/cjsea.bsky.social/post/3lkue2g5v6k2fAn illustration of the infamous Otodus megalodon based on a paper released recently that explores its physiology, speed, and life history. What I drew here is only based on the paper's evidence and modern illustrations. https://palaeo-electronica.org/content/2025/5450-biology-of-otodus-megalodon21 Mar 2025 04:15 +0000at://did:plc:tocdtvfugquofgnyn4tphmkf/app.bsky.feed.post/3lkue2g5v6k2fhttps://bsky.app/profile/cjsea.bsky.social/post/3lgjngpfnlk2lCarpathospinosus propheticus is a prehistoric species of spikefish found in Polish rocks dating to the Oligocene. It lived in what was the late Tethys Sea, and was related to the Triacanthodinae, a subfamily that contains most extant spikefish.25 Jan 2025 00:23 +0000at://did:plc:tocdtvfugquofgnyn4tphmkf/app.bsky.feed.post/3lgjngpfnlk2lhttps://bsky.app/profile/cjsea.bsky.social/post/3lgjeyptdpk2fToday, I had the honor of listening to and getting to meet Neil Shubin, one of the co-discoverers of Tiktaalik roseae!! While listening to the talk, I took the opportunity to learn about its unique bone structure and illustrated this sketch! Even got it signed!24 Jan 2025 21:52 +0000at://did:plc:tocdtvfugquofgnyn4tphmkf/app.bsky.feed.post/3lgjeyptdpk2fhttps://bsky.app/profile/cjsea.bsky.social/post/3lgejctg6qc2xCooking up some things in the back.22 Jan 2025 23:26 +0000at://did:plc:tocdtvfugquofgnyn4tphmkf/app.bsky.feed.post/3lgejctg6qc2xhttps://bsky.app/profile/cjsea.bsky.social/post/3leia73n6xs2c"Lord of the Lake" Gaiasia jennyae is the largest known genus of stem-tetrapod that has digits. Found from Namibian rocks dating to the early Permian, it habitated in cold lakes in Southern Gondwana as an apex predator, hunting fish and other tetrapods.30 Dec 2024 00:03 +0000at://did:plc:tocdtvfugquofgnyn4tphmkf/app.bsky.feed.post/3leia73n6xs2chttps://bsky.app/profile/cjsea.bsky.social/post/3ldxcds6oqk2o"Reigning Titan" The largest marine reptile currently known, Ichthyotitan is a shastasaurid ichthyosaur from the Late Triassic. Known from 2 partial lower jaw bones, indicate that it may have grown up to 82 ft/25m or even larger, and it fed on larger prey, hunting like orcas.23 Dec 2024 06:26 +0000at://did:plc:tocdtvfugquofgnyn4tphmkf/app.bsky.feed.post/3ldxcds6oqk2ohttps://bsky.app/profile/cjsea.bsky.social/post/3ldus52bdzs2lTeaser images of my Paleonnual series, where I choose extinct creatures published from the current year. Guess which animals these three are based on their piece titles: “Lord of the Lake” “Reigning Titan” “All-Seeing Serpent”22 Dec 2024 06:31 +0000at://did:plc:tocdtvfugquofgnyn4tphmkf/app.bsky.feed.post/3ldus52bdzs2lhttps://bsky.app/profile/cjsea.bsky.social/post/3ld5zmx5lgs2uAt last, I am pleased to share with y'all paleoart commissioned by William Jude Hart for their presentation: The Devonian Red Beds! Featuring several Devonian fish such as Bothriolepis, Turrisaspis, Holoptychius, Gyracanthus, and a large rhizodont.13 Dec 2024 05:13 +0000at://did:plc:tocdtvfugquofgnyn4tphmkf/app.bsky.feed.post/3ld5zmx5lgs2u