Showing posts with label chevron. Show all posts
Showing posts with label chevron. Show all posts

5/20/16

Whale Watch Log: May 20, 2016

This afternoon on board the Sanctuary with Captain Dave we were fortunate to find whales close to home pretty far west of the bank. We were lucky to spend plenty of time with a finback whale who was taking short dives and spending a good amount of time at the surface.

Note the chevron pattern on the back

The water was calm so we could very easily see the whale’s footprints as it made semi-circles beneath the surface, perhaps corralling fish! 

We happened upon a large minke whale about halfway through the trip, and were even able to see this whales minke mittens on its pectoral flippers at it swam along our starboard side! In true minke form, this whale disappeared for the rest of the trip. Regardless we enjoyed sightings of the finbacks in the area! There was a second finback who was quite a bit larger who was taking longer more sporadic dives. 

On the way home we spotted a harbor seal! All in all it was a beautiful day on the water.

— Annie & Laura

5/6/15

Log for May 6, 2015

On today’s whale watch aboard the Aurora, we headed to the NW corner where all our whale action was yesterday. It was a beautiful bright day with calm seas to look for whales!

Swirly chevron pattern on its back

We when arrived near the corner, we first spotted the tall blow of a fin whale. We got some great looks of this whale’s chevron pattern (see photo), and while we were observing this whale, another fin whale was swimming nearby.

Egret

After spending time with these two fins, we decided to check around for some other activity, and ended up finding a pair of humpback whales. When the first whale of the pair fluked, I was delighted to see that is was Egret, a calf of one of my favorite whales from my whale watching days in Bar Harbor, Siphon. I hadn’t seen this whale since it was a calf, so it was great to see it again! (see photo of fluke). The second, larger whale that wasn’t fluking for us, but it was later ID’ed as Zeppelin. These two appeared to be working together to deep feed today, with Egret diving deeper in the water column while Zeppelin stayed more shallow.

Zeppelin going the bathroom

Zeppelin must have been feeding well lately, as she defecated several times at the surface during our trip (see photo of her lifting her fluke to aid in this action!). Compared to Egret, a whale born in 2007, you can definitely see the life-experiences this whale has had. Each time Zeppelin would surface, we could see the white scarring on her mouth, indicative of lots of time bottom feeding for sand lance (Zeppelin appears to be a “righty”). 

Egret's and Zeppelin's dorsal fins

Zeppelin's dorsal fin

Also Zeppelin bears a scar on her dorsal fin (see photo), which was disfigured by an entanglement in a gill net in 1995. Luckily she has still thrived since then (20 years later!). She is the mother of Milkweed, who’s calf we witnessed briefly get entangled last season on our whale watch. Definitely food for thought today when thinking about human impacts.

Laura Howes

4/17/15

Log for April 17, 2015

Though a bit rainy, we had a great trip today aboard the Aurora. The sightings locations have been bouncing a bit around the NW corner the last few days, so captain Jeff decided to travel across the entire NW corner to find whales, and it paid off.

Lunge feeding behavior

When we arrived on the corner, we started seeing various splashes in the distance, and also began to be surrounded by scattered Atlantic white-sided dolphins. When we got closer to the splashes, myself and the passengers were very excited to see that it was actually lunge feeding behavior! Lunge feeding is one of my favorite behaviors because it always takes you by surprise and you really get to witness firsthand the amount of force these whales can exert - and today was no exception!

Sandlance scatter

We began the trip by watching a pair of two humpbacks (later ID’ed as Sprinkler and another unknown we have sent to Center for Coastal Studies to help ID) continuously horizontal lunge feeding together. Passengers were really fascinated on how this pair worked so well and quickly together! In some of the photos you can observe their prey (sandlance – see photo). This pair gave us some excellent close to boat lunges as well (see photo).

Lunging together

As this duo worked together, a third humpback, Trance, was side-lunging in the same location, but not associated. In the latter half of the trip, this group eventually formed into a trio, and while we were watching this group lunge, a large fin whale began lunge feeding close by! (see photo). It was a great teaching moment to explain the different feeding techniques of the two species.

Fin lunge

The fin whale lunge (see photo) is much sleeker and quicker, and makes quite a big wave! Also fin whales almost always lunge on their right side – it’s hypothesized that maybe their lighter-colored chevron patch on their right side (see photo) helps confuse the prey they are corralling.

You can barely see the lighter patch on this whale's side

Overall a fantastic day of lunging humpbacks and fin whales, and white-sided dolphins following alongside. We also spotted a minke whale and harbor seal, making it a five marine mammal-species day. Plus we saw tons of gannets and gulls!

— Laura Howes

7/28/14

2014 Sightings | July 28

Today aboard the Asteria for the 10AM whale watch, we travelled up to the northwest corner of Stellwagen Bank. Despite the rain and fog we experienced while boarding, the skies cleared up as we headed toward the bank, and it turned out to be a beautiful day on the water!

Exhale

Out of the haze we spotted the Cetacea, which was watching two humpback whales. This pair turned out to be Northstar and Hippocampus. These whales were consistently taking 4 and a half minute dives, giving passengers great looks at their flukes and of Northstar’s injured dorsal.

Northstar's fin on the mend

While these whales were taking synchronized dives, they sometimes surfaced apart from one another, but continually rejoined as a pair. We still do not fully understand the social behaviors of these whales and their seemingly fluid associations. Northstar and Hippocampus have been traveling and feeding together since last Thursday and are an example of the longer term associations we do commonly see here on the feeding ground.

 Lady Maryland

As an added bonus for the day the very pretty sailing vessel the Lady Maryland passed us in the mist while we watched our pair of whales.

It turned out to be a phenomenal day to be out on the water!

— Tegan, Kira and Kirsten


***

On today’s 12pm whale watch aboard the Aurora, our Captain Chip led us to the NW corner of Stellwagen in search of whales. Despite the many whitecaps – we were able to spot the blows of several whales today!

Note the chevron pattern on this fin whale

We first found a pair of traveling fin whales, and observed their two different chevron patterns on their right side. They also varied in length – the whale trailing behind the first fin whale was quite large! These markings are used to identify unique individuals in the population, as part of the North Atlantic Fin Whale Catalog held up in Allied Whale in Bar Harbor, Maine.

Northstar's dorsal injury continues to heal

We then moved on to find two adult humpbacks – Northstar and Hippocampus, who were traveling slowly though the area. We observed Northstar’s dorsal injury – it is great to be able to keep seeing this male humpback in order to track the progression of how this wound is healing. We send photos of any whales that are injured or appear unhealthy to the Center for Coastal Studies, based in Provincetown, Mass.

Ready for their close-up
Hippocampus's fluke

On our last looks of this pair, these two approached our boat to give us an up-close and personal look! We also spotted a Minke whale, making it a three species day!

— Laura

9/14/13

2013 Sightings | September 14

Today on the Asteria we headed to Jeffrey’s Ledge and were able to find two scattered fin whales in the area! We also spotted a small pod of harbor porpoise on our way north. It was great to finally find some whales after our drought this week.

A fin's whale: note the distinctive chevron pattern

W spent time with one of the fin whales, that was taking 5 minute dives with short surfacings. Passengers were treated to a fantastic look of the whale’s right side near the end of the trip, so we got a great look at its distinctive chevron pattern. Near the end of the trip the whale became a bit more sporadic with longer dives, so we then began our trip back home.