Malacology

The chambered shell of nautilus have inspired innovation and art for centuries. This video gives background on nautilus and breaks down the key features of these shells. Check out my website to learn more about shells! https://www.seahorseandco.com/ Shell Identification guides for the United States east coast: https://www.seahorseandco.com/identificationguides Instagram: https://www.instagram.com/seahorseandco/ Facebook: https://www.facebook.com/seahorseandco Chapters: 0:00 Intro to Nautilus Shells 0:22 Nautilus Shells as Inspiration 0:46 Background on Nautilus 1:25 Nautilus Shells and the Golden Ratio 2:08 Shell Layers 2:38 External Features 2:50 Internal Shell Features 3:37 Nautilidae 4:04 Nautilus vs. Allonautilus 4:26 Paper Nautilus? 4:42 Outro

Florida Fighting Conch: Strombus alatus Gmelin, 1791 https://www.seahorseandco.com/shells/florida-fighting-conch Shell Identification guides for the United States east coast: https://www.seahorseandco.com/identificationguides Instagram: https://www.instagram.com/seahorseandco/ Facebook: https://www.facebook.com/seahorseandco

Tusk Shells are also sometimes called Tooth Shells. They belong to the class of mollusks called Scaphopoda. This video explains the parts of a scaphopod shell and points out some key features to look at when identifying them. Check out our website to learn more about shell morphology! https://www.seahorseandco.com/ Shell Identification guides for the United States east coast: https://www.seahorseandco.com/identificationguides Instagram: https://www.instagram.com/seahorseandco/ Facebook: https://www.facebook.com/seahorseandco Chapters: 0:00 Intro to Tusk Shells 0:23 Scaphopod Background 0:47 Tusk Shell Features 1:25 Dentaliida 2:03 Gadilida 2:24 Shell Currency

Northern Moon Snails and Sharks can be difficult to differentiate. Learn how to tell them apart with this short! Northern Moon Snail: Euspira heros (Say, 1822) https://www.seahorseandco.com/shells/north-moon-snail Shark Eye: Neverita duplicata (Say, 1822) https://www.seahorseandco.com/shells/shark-eye Shell Identification guides for the United States east coast: https://www.seahorseandco.com/identificationguides Instagram: https://www.instagram.com/seahorseandco/ Facebook: https://www.facebook.com/seahorseandco

The Limpet shell type has evolved many times through the history of gastropods. For this reason, we often distinguish between limpet and limpet-like shells. This video explains the difference and breaks down how to identify some groups of limpet and limpet-like shells. Check out our website to learn more about shell morphology! https://www.seahorseandco.com/ Shell Identification guides for the United States east coast: https://www.seahorseandco.com/identificationguides Instagram: https://www.instagram.com/seahorseandco/ Facebook: https://www.facebook.com/seahorseandco Chapters: 0:00 Intro to Limpets 1:00 True Limpets 1:23 False Limpets 2:00 Keyhole Limpets 2:33 Limpet Shell Sculpture 3:00 Slipper Snails 4:03 Cup-and-Saucer Snails 4:14 Chinese Hat Snails

Bivalve shells can be a challenge to identify when you first start shelling! This video explains the parts of bivalve shells so that you know what to look for when identifying these shells. Link to our website to learn more about shell morphology and to check out our US East Coast Identification Guides: https://www.seahorseandco.com/ Instagram: https://www.instagram.com/seahorseandco/ Facebook: https://www.facebook.com/seahorseandco Chapters: 0:00 Intro to Bivalve Shells 0:23 Shell Valves 0:46 The Hinge 1:10 Adductor Muscles 2:19 The Pallial Line and Sinus 2:54 Shell Sculpture 3:53 The Byssus Note: I made a mistake in saying spiral sculpture instead of radial sculpture so I had to reupload the video to make the correction. Sorry guys!

This video breaks down the parts of a traditional spiral shaped gastropod shell. Learning these parts can make identifying gastropod shells a lot easier! Link to our website to learn more about shell morphology and to check out our US East Coast Identification Guides: https://www.seahorseandco.com/ Instagram: https://www.instagram.com/seahorseandco/ Facebook: https://www.facebook.com/seahorseandco Chapters: 0:00 Intro to Gastropod Shells 0:38 Shell Whorls 1:14 The shell aperture and operculum 1:39 The Shell Lip 2:02 The Siphonal Canal 2:19 Shell Sculpture 3:40 The Protoconch 4:15 Thanks for watching 4:27 Seahorse and Co Identification Guides

Channeled Whelk: Busycotypus canaliculatus (Linnaeus, 1758) This is a Channeled Whelk! It has a large pear-shaped dextral shell. Each coil is smooth with a deep groove along the spiral. They can be found on the Atlantic coast of the United States from Massachusetts to Florida. They have also been introduced to parts of California. They are predatory snails that feed on bivalves like clams and oysters. It is the official state shell of Delaware. Check out the Seahorse and Co Website to learn about more shells: https://www.seahorseandco.com/ It includes free to use shell identification guides and more! #shells #molluskmonday