Gray Whale Migration Update: Mar. 28, 2012 |
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The parade of northbound Eschrichtius robustus is in full swing. Whales in the lead are now passing Canada's Vancouver. The satellite-tagged whale Varvara is one of them! In California, high daily counts indicate phase 1 is peaking. Moms and babies will be next, as phase 2 gets underway. Got questions? Ask the Expert opens Friday!
This Week's Update Includes:
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Image of the Week | |||||||||||||||||||||||
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News: A Peek at a Peak? | ||||||||||||||||||||||||
In stormy seas, high winds, fog, clouds, rain or clear weather — the whales are heading north! From Vancouver, Canada, Kati (Post #15) shares news of good whale watching, including the celebrity whale Varvara: "Varvara was traveling very quickly as she passed along the British Columbia coast, moving at about I00 miles per day." Kati also said they're expecting to see their first cow/calf pair any day: "With Observation Post #6 (ACS/LA volunteer observers on Palos Verde Peninsula, just north of LA) having reported calves March 20/21, we will expect to see some moms & babies off Tofino about three weeks later." Take note and mark your calendars!
Familiar "resident whales" are back in Washington, and Oregon’s coast-wide Whale Watch Week is March 24-31. Ranger Kate Scopellet shares a sample of the whale counts by volunteers at several spots along the Oregon coast. See her field notes for our map's Post #12: How far out are the whales? Counting the Whales Passing California At Post #7 Michael Smith also reported several good days, including this one: "Gray whales all over our area, just about all through the day. We saw them way offshore and very close to shore. There were big ones and little ones, in groups and singles. Twenty-three were northbound and one was southbound, yes, southbound." Gray Whales Count has tallied 394 whales but still awaits a first cow/calf sighting. When will it be? Baja Lagoons: Tourist Season Ending Next?
Alisa Schulman-Janiger explains: "We are now likely in the middle of the peak of the first northbound migration phase; not cow/calf pairs, who come by in peak numbers about 4-6 weeks later in the second northbound migration phase. Calf counts should begin to increase in number over the next few weeks, usually peaking near the end of April." Stay tuned! Read Field Notes |
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Observe and Wonder: Ask the Expert | ||||||||||||||||||||||||
Explore the life of a gray whale through images in this photo gallery. As you look, what
do you wonder? How can such a huge animal float? How can
a baby whale drink milk in the ocean? Is the water ever too cold, too warm, too polluted, too turbulent? Challenge
yourself to ask at least two questions about each photo. Our whale
expert, Kim Shelden, eagerly awaits your questions.
Ask
the Expert
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Research: Challenges to Whales' Survival | ||||||||||||||||||||||||
The rescue of Bart (top of this report) made world headlines on the Internet. "Unfortunately this is not the first time we've experienced animals caught in gill nets," said Melissa Sciacca, a spokeswoman for the Pacific Marine Mammal Center in Laguna Beach, whose staffers took part in the rescue. "When marine mammals become entangled, they are not always able to surface properly to breathe, which can result in drowning." With a lifespan up to 80 years, gray whales face many perils in their annual migrations. But they are astonishing survivors. What are some challenges to a whale's survival? Which are human-caused? Which are natural? How can people help protect whales and their habitat? These pages help you find out: | ||||||||||||||||||||||||
Tracking the Migration: Using Daily Data |
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What exciting story do the data tell this week? What was the largest day for whale sightings at both point-count posts? This week, predict whether phase one of the northbound migration has peaked. What do you think will happen next?
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The next gray whale migration update will be posted on April 11, 2012. | ||||||||||||||||||||||||