
Humboldt Squid washes ashore in Chesterman Beach
You may have seen or heard of the the dozens of Humboldt Squid that washed ashore on Chesterman Beach last night (and were there this morning and all day in the wrack line at the high tide mark).
This voracious species of squid usually lives at depths of 200 to 700 meters and is typically found in the warmer areas of the Pacific Ocean. In recent years, it has expanded its geographic range and has been sighted regularly in the Pacific Northwest since 2004. In 2004, there was a mass stranding in Long Beach, Washington. Just three weeks ago, there was another mass stranding in La Jolla, California. In both cases, as with the squid at Chesterman Beach right now, the squid appear to be immature juveniles. Adults can reach 6-7 feet and 110 to 110 pounds! What likely happened is that they came closer to the water’s surface during the night (when they hunt) as they were chasing their prey (in this case herring and mackerel, which were also found in the wrack line), and they may have encountered colder water or stronger currents and washed ashore on the beach. The presence of the squid and their prey is a reminder that we are experiencing an El Niño event this year – a climatic oscillation that occurs every 3-8 years and which results in warmer waters off the west coast of Vancouver Island. Interestingly, this species of squid is expanding its range southward off the coast of Peru and Chile at about the same rate as it is expanding northward. Some biologists report that this expansion in range may be linked to climate change.
These animals are voracious predators and hunt in packs using the tooth edged suckers on their eight tentacles to grab and hold prey, which they repeatedly stab with their very sharp beak. Indeed, the stomach we dissected on the beach contained herring scales and small chunks of herring flesh. They are very curious animals and have been reported to “attack” underwater cameras as well as SCUBA divers. If you find a Humboldt Squid still alive on the beach, it is best NOT to touch it as the beak can inflict a lot of harm.
Please take a look at some photos I captured while looking at these magnificent creatures. Mary Bewick, who has lived on Chesterman Beach for 30 years, told me that she has never heard of Humboldt squid washing ashore like this before. Please let me know if you have seen them before!
Submitted by:
Josie Osborne
Raincoast Education Society