Three generations of Humpback Whales have now been documented!
This is such an indication of the great collaborative effort in studying the fortunate return of Humpback Whales off British Columbia’s coast, and its importance.
Alethea Leddy was the first to document Apollo with a calf, now nicknamed Nova. Alethea’s photos from June 18th near Race Rocks even allowed us to determine that the calf is male. The calf had been lying on his back tail-lobbing whereby the pelvic area could be seen. See Aletha’s photo at the end of this blog that allowed determination of Nova’s sex. For detail on sex determination in Humpbacks, click here for our blog on the subject.
We know that Apollo was born in 2010 to Horizon but did not know her sex before now.
We first documented Horizon in 2004 when she was already at least subadult. Apollo is her first known calf. We documented a second calf in 2013 and have not had re-sightings of this whale.
Calves only stay with their mothers for a year. Having these solid ID photos allows us to ID them in future. Because the calves often lose a lot of the white pigmentation in their tails as they age, It is particularly helpful to also have photos showing both sides of the dorsal fin and the trailing edge of the tail. Being able to study whales as individuals allows us to have data informing everything from age of first calving (varies per population), to life expectancy, to social associations, to how the whales use the coast.
Humpbacks are nicknamed for distinctive features so that it is easier to recognize them as individuals. Horizon has horizontal lines on her tail. The markings on Apollo’s tail suggest planets. And, while some of the white will likely disappear on the calf’s tail, there is a distinctive line and a moon-shaped bump that will likely stay. Thereby, Alethea suggested Nova, also keeping with the celestial theme of these 3 generations of whales.
To make the point again that it takes a dedicated community to study giants, below are the names of all those who have contributed sightings of these 3 whales (outside of our direct MERS team). This includes naturalists, captains and guest of at least 9 ecotourism companies as well as our research colleagues:
Jarret Morton, Alexandra Morton, Marilia Olio, Tasli Shaw, Mark Malleson, Gary Sutton, Jos Krynen, Amber Stroeder, Kaitlin Paquette, Johanna Ferrie, Eiko Jones, Peter Hamilton, Leif Nordman, Shea Majbroda, Michelle Mercer, Chloé Warren, Jennie Leaver, Jeff Aoki, Carmen Pen, Alison Ogilvie, Geoff Dunstan, Roger McDonell, Franz Plangger, April Macleod, Jim Borrowman, Jess Fargher, Maureen Towers, Dave Towers, Sophia Merritt, Kyle Kermode, Inge van der Wulp, Shea Majbroda, Jan Kees, Humpbacks of the Salish Sea, Keta Coastal Conservation.
See this link to purchase a MERS Humpback Whale Catalogue (PDF) for whales documented from the northern Strait of Georgia to the northern end of Goletas Channel. Updated PDF provided annually at no extra charge.