Gray whale and walrus feeding excavation on the Bering Shelf, Alaska.
Journal of Sedimentary Petrology
By: C.H. Nelson, K.R. Johnson, and J. H. Barber Jr.
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Abstract
The gray whales (average mouth length, 2.0 m), when suction feeding on infaunal amphipods, create shallow pits in the sea floor, typically 2.5m x 1.5m x 10cm deep, which are distinct and mappable on sidescan sonographs. Similarly, walrus, when foraging for shallow clams, create long, linear feeding furrows that average 47 x 0.4 x 0.1m (length-width-depth). The whale feeding pits are commonly enlarged and oriented by seasonal storm-related scour. Walrus-feeding features are smaller, formed in higher-energy environments, and modified more rapidly than whale-feeding pits. -from Authors
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Gray whale and walrus feeding excavation on the Bering Shelf, Alaska. |
| Series title | Journal of Sedimentary Petrology |
| Volume | 57 |
| Issue | 3 |
| Year Published | 1987 |
| Language | English |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Journal of Sedimentary Petrology |
| First page | 419 |
| Last page | 430 |
| Google Analytic Metrics | Metrics page |