3138952553_0781ae076a
Photo © Ken-ichi Ueda, some rights reserved
Hammonasset State Park, Madison, CT (Google, OSM)
41.2489624023, -72.5429992676
open

Description

We have a couple moon snails here, and two that are this large, so I can't be sure. Next time I'll check the book in the field!

Dec. 26, 2008 18:09:40 -0800
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Comments & Identifications

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Moon Snails - Photo JoJan, no known copyright restrictions (public domain)
kueda's ID: Moon Snails (Family Naticidae)
Posted by kueda almost 6 years ago (Flag)
211-thumb

looks alike to Natica didyma
Check that out
Size ?

Posted by vishalbhave over 5 years ago (Flag)
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Posted by vishalbhave over 5 years ago (Flag)
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WoRMS says Natica didyma is from Mozambique, and this snail was in Madison, Connecticut, USA, so I'm thinking it's not that. The limited field guide I had for intertidal inverts in the eastern US listed two moon snails, Polinices duplicatus and Lunatia heros, so I'm guessing it's one of those, but telling them apart apparently requires inspecting the shell aperture, which was kind of, uh, filled with snail in this case.

The size of the dish here was about 10 cm in diameter, so I guess the shell was around 4cm?

Posted by kueda over 5 years ago (Flag)
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Northern Moon Snail - Photo (c) Femorale, some rights reserved (CC BY-NC)
slapcin's ID: Northern Moon Snail (Polinices heros [inactive]) (inactive taxon)
Posted by slapcin 16 days ago (Flag)
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This is a bit too globose with shouldered whorls and impressed sutures for Polinices duplicatus now Neverita duplicata and looks like Lunatia heros now Euspira heros.

Posted by slapcin 16 days ago (Flag)
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Neverita didyma - Photo (c) Self, some rights reserved (CC BY-SA)
vishalbhave's ID: Neverita didyma, a member of Moon Snails (Family Naticidae) Added as part of a taxon swap
Posted by vishalbhave 16 days ago (Flag)
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Northern Moon Snail - Photo (c) Femorale, some rights reserved (CC BY-NC)
slapcin's ID: Northern Moon Snail (Euspira heros) Added as part of a taxon swap
Posted by slapcin 16 days ago (Flag)
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Will check out my Long Island Sound guide when I get to it, John. Do you think this observation from down the beach is the same?

Posted by kueda 16 days ago (Flag)
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That other one is Neverita duplicata. The sutures are shallower and the shell more depressed with a larger and pigmented partial plug in the umbilicus.

Posted by slapcin 15 days ago (Flag)
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Identification Summary

Moon Snails - Photo JoJan, no known copyright restrictions (public domain)
kueda's ID: Moon Snails (Family Naticidae)
Northern Moon Snail - Photo (c) Femorale, some rights reserved (CC BY-NC)
slapcin's ID: Northern Moon Snail (Euspira heros) Added as part of a taxon swap
Neverita didyma - Photo (c) Self, some rights reserved (CC BY-SA)
vishalbhave's ID: Neverita didyma, a member of Moon Snails (Family Naticidae) Added as part of a taxon swap
kueda has chosen to retain control over the taxa associated with their observations
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Data Quality Assessment

Community-supported ID? Yes
2 people agree
0 people disagree
Date? Yes
Georeferenced? Yes
Photos or sounds? Yes
Is the organism wild/naturalized? Unknown
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Does the location seem accurate? Unknown
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Does the date seem accurate? Unknown
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Appropriate? Yes
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Observation © Ken-ichi Ueda
Cc-by_small some rights reserved

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