[2] At some locations, large numbers of snubnosed eels have been caught over a short time, indicating local abundance or schooling behavior.

[6] Adults appear to be specialized hagfish-like scavengers, using their powerfully muscled jaws and short, stout teeth to tear away chunks of flesh from carcasses that have fallen to the sea floor.

"[8] Spencer Fullerton Baird reported that the eels are "not unfrequently found nestling along the backbone of the halibut and cod, where they seem to have the power of abiding for some time without actually causing death."

Baird also made note of the eels' supposed habit of burrowing into the abdominal cavities of netted, gravid shad and eating their eggs within the span of "a few minutes".

[9] In 1992, two snubnose eels were discovered inside the heart of a 395 kg (871 lb) shortfin mako shark (Isurus oxyrhinchus) landed at Montauk, New York.

The authors speculated that the eels had burrowed into the shark through the gills or throat (the precise path of entry could not be determined, possibly obscured by damage caused by the tow rope) after it had been weakened on the capture line, entered the circulatory system, and then made their way to the heart.

[4] In 2002, Koyama et al. reported that they had cultured cells from the pectoral fin of a snubnosed eel and maintained them in vitro for over a year.

This represents one of the first cases of successful long-term tissue culture derived from a deep-sea multicellular organism, and has implications for a range of biotechnological fields.