Cetaceans on the Outer Cape
The month of May is fast moving to a close and the spring migration continues to be an adventure. Launching our boat , Aleutian Dream into the water this past weekend finally enabled us to get out in the Atlantic and off shore to investigate reports of massive schools of sand eels and voraciously feeding Humpback Whales.
We were joined by friend Ted Cheeseman a Conservation Biologist and whale naturalist visiting from California and scientists from Woods Hole Oceanographic Institute who were all "off duty" and keen to see some cetacean action. And action we found! Leaving Chatham Harbor in the slate grey of a cool spring morning to calm seas we ventured south a few miles to examine the condition of the South Beach cuts of 2013 & 2014 and to assess the haulouts of Gray seals gathered along the Monomoy side of these inlets. An ocean swell from the previous days Northeast winds was causing a significant line of breakers across both inlets even at high tide. This does not bode well for navigating this short cut to Nantucket Sound for mariners this summer season. We observed seals well off the beach about a mile and in numbers suggesting that as yet the apex predator white sharks may not yet have arrived. We understand that the listening buoys are to be deployed in the next days so real data may soon be available on the presence of white sharks. But since our target for the day was whales we quickly assessed that there were no Humpbacks feeding in the immediate Chatham Harbor area out 3 miles so we decided to head north to check out the action reported heavily in the vicinity of Race Point near Provincetown. We were rewarded for the long run up from Chatham with confirmed sightings of four different cetaceans!
A Fin Whale feeding off of Race Point
Minke Whale feeding on Stellwagen
The spectacular behavior of Humpbacks known as Bubble netting is one of the most amazing sights to witness in natural history among whales. This is cooperative feeding among 1 - many whales working together to efficiently feed. Here are a few images we made.
Photo by Tim Vorheis - Humpback "Ventesca" bubble netting (taken offshore about 2005)
Bubble netting as mentioned is very special to see. Thanks very much to Tuna spotter pilot and photographer Tim Vorheis who nailed this image some years ago so you can see what is happening...and this is just one whale working. A helpful article describing this feeding behavior is here.
A few other shots of "bubble netting taken off of Chatham last November.