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Orcasphere » erickpeirson
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Author Archives for erickpeirson

J8 Subpod – Day 2


43 28.2N 123 04.9W Travelling down-island, close to shore. 28 vessels within a 2-mile radius, the top count this season. I promise there are vocals in there…. somewhere… Actually, toward the end of this sample I have J8 pinging the hydrophone from negligible range (Kerri, it was an accident, I promise). Listen here (2.5MB)

J8 Subpod


48 29.11N 122 43.64W Travelling up-island slowly, occassional milling. Eerie vocals. Listen here (1.1MB)

J & L


48 25.22N 122 43.64W Travel, medium distribution. W-bound. Interesting vocal change toward the end, as the fleet goes from mostly set to mostly paralleling. Coincidence? Listen here (5.4MB)

J’s near Davidson


48 25.46N 122 45.48W 1519 Moving sporadically toward Davidson Rock. Lots of breeching, and a few spy-hops. The pod was traveling in three groups, all within a mile of each other, alternating between 8-9kt travel and what looked like foraging behavior.  Considerable noise from the sea state, and occasionally I forget to turn off the [...]

Super-pod at Battleship


Lat: 48 37.69N; Lon: 123 13.26W 1248 Making about 7kts toward Kellet Bluff. One of the frustrations of a sensitive hydrophone is that any abrasion of the cable against the hull of the boat results in quite a bit of noise. You can hear some of that in the last third of the recording, below. [...]

J & L in Rosario Strait


J’s and L’s between Williamson Rock and Lawson Reef, southbound around 1600, July 7. This is the most active part of the recording, with some strong echolocation clicks and whistles. The predominant noise (low-rev “clanking”) is from a tanker in the shipping lanes, about 3 miles away.  Listen here (1.4MB)

SRKW call frequency response to boat noise?


The field season is rolling, with all three southern resident killer whale pods “in the area,” and whale watchers packing all of our favorite boats. I’ve been hanging out with these animals for five years now, and for the first time I’m trying my hand at research. Here is the full text of my research proposal. [...]