Two large species of the agglutinated foraminifera genus Bathysiphon are common in samples and photographs from bathyal depths on the North Carolina continental slope: B. filiformis off Cape Hatteras (588-930 m bathymetric depth) and B. major off Cape Lookout (850-1950 m depth). The sampling area, and particularly the 850 m station where B. filiformis is abundant (mean densities of 59-154 per m2), is believed to receive large inputs of organic material from various sources. This is consistent with the previously observed occurrence of large Bathysiphon species in regions of high food supply. Ten camera sled transects across the eastern U.S. continental slope between 32-degrees-N and 41-degrees-N emphasize the abundance of B. filiformis in the Cape Hatteras area compared with its rarity or absence elsewhere along the continental slope.
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