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Molluscs › Trough Shells

Otter shell

Lutraria lutraria

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Wildlife study photograph from iNaturalist.
(c) brigid_nature, some rights reserved (CC BY-NC)

25 photos

Study shows up to four per card, from different observers, so you learn the species rather than one picture. Heart the good ones and swap any you do not like.

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Easily confused with

Study checks a spoken answer against these, and tells you which one you named.

Where it is recorded

Records by month in Alaska.January 684, February 505, March 792, April 1,245, May 1,796, June 1,958, July 2,095, August 1,802, September 1,323, October 988, November 540, December 422.
United States14,150
Alaska14,150
United Kingdom118
Netherlands113
Zuid-Holland82
Spain81
England65
Portugal64
Galicia54
Noord-Holland29

Counts show where people looked, not only where it lives.

Traits

Physical

  • Shell-bearingProtected by a hard shellFrom its classification

Group and habits

  • Filter feederFeeds by filtering suspended food particles from water.From its classification

Classification

KingdomAnimals · Animalia
PhylumMolluscs · Mollusca
ClassBivalves · Bivalvia
OrderVenerida
FamilyTrough Shells · Mactridae
GenusOtter-shells · Lutraria

Sources

Remember the name next time.

Practise Otter shell with real photos from different observers. Say the name out loud, and it comes back just before you would forget it.

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