orca – Roumazeilles.net https://www.roumazeilles.net/news/en/wordpress Technology opinions and others Wed, 22 Apr 2020 17:51:31 +0000 en-US hourly 1 Orcas, videos I loved https://www.roumazeilles.net/news/en/wordpress/2020/04/22/orcas-videos-i-loved/ https://www.roumazeilles.net/news/en/wordpress/2020/04/22/orcas-videos-i-loved/#respond Wed, 22 Apr 2020 17:51:27 +0000 https://www.roumazeilles.net/news/en/wordpress/?p=15653 I know! This looks like advertisement for a certain diving company. But I don’t care, I don’t know them. And the videos are awesome.

Check the second video and observe the hunting technique. Look at how the orcas use their tail to stun fish (you should hear the noise of the tail hitting fish). I knew about it, but this is really easy to observe here.

]]> https://www.roumazeilles.net/news/en/wordpress/2020/04/22/orcas-videos-i-loved/feed/ 0 Killer whale – Wrangel Island https://www.roumazeilles.net/news/en/wordpress/2019/08/23/killer-whale-wrangel-island/ https://www.roumazeilles.net/news/en/wordpress/2019/08/23/killer-whale-wrangel-island/#respond Fri, 23 Aug 2019 19:14:44 +0000 https://www.roumazeilles.net/news/en/wordpress/?p=14908 A beautiful killer whale spotted from the boat, while cruising far from the coast.

Orca, or killer whale (Orcinus orca), orque, ou épaulard.
Wrangel Island, Russia.
August 2018.

]]> https://www.roumazeilles.net/news/en/wordpress/2019/08/23/killer-whale-wrangel-island/feed/ 0 Orcas family snapshots https://www.roumazeilles.net/news/en/wordpress/2015/11/27/orcas-family-snapshots/ https://www.roumazeilles.net/news/en/wordpress/2015/11/27/orcas-family-snapshots/#respond Fri, 27 Nov 2015 14:44:15 +0000 https://www.roumazeilles.net/news/en/wordpress/?p=13852 Orcas are marvellous mammals fro mthe sea that are usually only seen from the water surface: a fin, a rostrum jsut out of the water to catch a sea lion. Nothing more.

But the NOAA scientists tracked them with an aerial photo drone and brought back some astonishing photos from above.

Overhead image of the newest member of the Southern Resident killer whale population, L122, just days after being born to first-time mother L91. This image shows the small size of neonate calves and the close bond between mother and calf that will last a lifetime. Credit: NOAA Fisheries, Vancouver Aquarium. Taken by UAV from above 90 feet under NMFS research permit and FAA flight authorization. More information at http://www.fisheries.noaa.gov/podcasts/2015/10/uav_killer_whale.html
Overhead image of the newest member of the Southern Resident killer whale population, L122, just days after being born to first-time mother L91. This image shows the small size of neonate calves and the close bond between mother and calf that will last a lifetime. Credit: NOAA Fisheries, Vancouver Aquarium. Taken by UAV from above 90 feet under NMFS research permit and FAA flight authorization. More information at http://www.fisheries.noaa.gov/podcasts/2015/10/uav_killer_whale.html

New mother L91 eating a salmon as her newborn calf looks on. This fish was caught and given to her by other members of the family group, showing that relatives help her as she cares for her calf. Image to be used for health assessment. Credit: NOAA Fisheries, Vancouver Aquarium. Taken by UAV from above 90 feet under NMFS research permit and FAA flight authorization. More information at http://www.fisheries.noaa.gov/podcasts/2015/10/uav_killer_whale.html
New mother L91 eating a salmon as her newborn calf looks on. This fish was caught and given to her by other members of the family group, showing that relatives help her as she cares for her calf. Image to be used for health assessment. Credit: NOAA Fisheries, Vancouver Aquarium. Taken by UAV from above 90 feet under NMFS research permit and FAA flight authorization. More information at http://www.fisheries.noaa.gov/podcasts/2015/10/uav_killer_whale.html

An adult female Southern Resident killer whale (L94) nursing her calf. Lactation is energetically costly for these whales, and future photogrammetry images of the calf’s growth and the mother’s condition will reveal if the mother is getting enough food to support both herself and the calf. Note the distinctive saddle patch on the mother. This allows scientists to recognize individual whales in photographs. Credit: NOAA Fisheries, Vancouver Aquarium. Taken by UAV from above 90 feet under NMFS research permit and FAA flight authorization. More information at http://www.fisheries.noaa.gov/podcasts/2015/10/uav_killer_whale.html
An adult female Southern Resident killer whale (L94) nursing her calf. Lactation is energetically costly for these whales, and future photogrammetry images of the calf’s growth and the mother’s condition will reveal if the mother is getting enough food to support both herself and the calf. Note the distinctive saddle patch on the mother. This allows scientists to recognize individual whales in photographs. Credit: NOAA Fisheries, Vancouver Aquarium. Taken by UAV from above 90 feet under NMFS research permit and FAA flight authorization. More information at http://www.fisheries.noaa.gov/podcasts/2015/10/uav_killer_whale.html

A photogrammetry image of the entire I16 matriline of Northern Resident killer whales taken in 2014. This image shows the size of whales at different ages. Note the small, gray calf in the middle (I144), only a few months old, swimming to the right of its mother (I51). To the left of the mother is the calf’s older sibling (I129). Images to be used for health assessment. Credit: NOAA Fisheries, Vancouver Aquarium. Taken by UAV from above 90 feet under Fisheries and Oceans Canada research permit and Transport Canada flight authorization. More information at http://www.fisheries.noaa.gov/podcasts/2015/10/uav_killer_whale.html
A photogrammetry image of the entire I16 matriline of Northern Resident killer whales taken in 2014. This image shows the size of whales at different ages. Note the small, gray calf in the middle (I144), only a few months old, swimming to the right of its mother (I51). To the left of the mother is the calf’s older sibling (I129). Images to be used for health assessment. Credit: NOAA Fisheries, Vancouver Aquarium. Taken by UAV from above 90 feet under Fisheries and Oceans Canada research permit and Transport Canada flight authorization. More information at http://www.fisheries.noaa.gov/podcasts/2015/10/uav_killer_whale.html

Another image of I51 and her two offspring, this one taken in 2015. Comparing this image to the one taken the year before, one can see that the youngest calf (I144) has lost its gray mottling and grown considerably. It is now almost half the length of its mother and approaching the length of its older sibling (I129). These images show how scientists can track the growth of individual whales across time to monitor their health and condition. Credit: NOAA Fisheries, Vancouver Aquarium. Taken by UAV from above 90 feet under Fisheries and Oceans Canada research permit and Transport Canada flight authorization. More information at http://www.fisheries.noaa.gov/podcasts/2015/10/uav_killer_whale.html
Another image of I51 and her two offspring, this one taken in 2015. Comparing this image to the one taken the year before, one can see that the youngest calf (I144) has lost its gray mottling and grown considerably. It is now almost half the length of its mother and approaching the length of its older sibling (I129). These images show how scientists can track the growth of individual whales across time to monitor their health and condition. Credit: NOAA Fisheries, Vancouver Aquarium. Taken by UAV from above 90 feet under Fisheries and Oceans Canada research permit and Transport Canada flight authorization. More information at http://www.fisheries.noaa.gov/podcasts/2015/10/uav_killer_whale.html

Photogrammetry image of an adult female Southern Resident (J16) as she’s about to surface with her youngest calf, born earlier this year, alongside. Future photogrammetry will allow scientists to monitor the growth of the calf and condition of the mother to ensure they are getting an adequate food supply. Credit: NOAA Fisheries, Vancouver Aquarium. Taken by UAV from above 90 feet under NMFS research permit and FAA flight authorization. More information at http://www.fisheries.noaa.gov/podcasts/2015/10/uav_killer_whale.html
Photogrammetry image of an adult female Southern Resident (J16) as she’s about to surface with her youngest calf, born earlier this year, alongside. Future photogrammetry will allow scientists to monitor the growth of the calf and condition of the mother to ensure they are getting an adequate food supply. Credit: NOAA Fisheries, Vancouver Aquarium. Taken by UAV from above 90 feet under NMFS research permit and FAA flight authorization. More information at http://www.fisheries.noaa.gov/podcasts/2015/10/uav_killer_whale.html

Photogrammetry image the A42 family group of Northern residents. Killer whales travel in their matrilineal family group their entire lives. Here the matriarch A42 is in the middle with her newest calf beneath her. Note A42’s distinctive saddle patch. This allows scientists to recognize individual whales from the photographs and assess their health. Credit: NOAA Fisheries, Vancouver Aquarium. Taken by UAV from above 90 feet under Fisheries and Oceans Canada research permit and Transport Canada flight authorization. More information at http://www.fisheries.noaa.gov/podcasts/2015/10/uav_killer_whale.html
Photogrammetry image the A42 family group of Northern residents. Killer whales travel in their matrilineal family group their entire lives. Here the matriarch A42 is in the middle with her newest calf beneath her. Note A42’s distinctive saddle patch. This allows scientists to recognize individual whales from the photographs and assess their health. Credit: NOAA Fisheries, Vancouver Aquarium. Taken by UAV from above 90 feet under Fisheries and Oceans Canada research permit and Transport Canada flight authorization. More information at http://www.fisheries.noaa.gov/podcasts/2015/10/uav_killer_whale.html

Photogrammetry image of an adult female Southern Resident killer whale (J28) traveling with her juvenile offspring (J46). This image reveals the wide body profile of the mother, indicating that she is likely pregnant and due to have a second calf in the coming months. Credit: NOAA Fisheries, Vancouver Aquarium. Taken by UAV from above 90 feet under NMFS research permit and FAA flight authorization. More information at http://www.fisheries.noaa.gov/podcasts/2015/10/uav_killer_whale.html
Photogrammetry image of an adult female Southern Resident killer whale (J28) traveling with her juvenile offspring (J46). This image reveals the wide body profile of the mother, indicating that she is likely pregnant and due to have a second calf in the coming months. Credit: NOAA Fisheries, Vancouver Aquarium. Taken by UAV from above 90 feet under NMFS research permit and FAA flight authorization. More information at http://www.fisheries.noaa.gov/podcasts/2015/10/uav_killer_whale.html

Photogrammetry image of an adult male Southern Resident killer whale (L41). This photo shows the tall dorsal fin, curved flukes, and large pectoral fins characteristic of adult males. Images to be used for health assessment. Credit: NOAA Fisheries, Vancouver Aquarium. Taken by UAV from above 90 feet under NMFS research permit and FAA flight authorization. More information at http://www.fisheries.noaa.gov/podcasts/2015/10/uav_killer_whale.html
Photogrammetry image of an adult male Southern Resident killer whale (L41). This photo shows the tall dorsal fin, curved flukes, and large pectoral fins characteristic of adult males. Images to be used for health assessment. Credit: NOAA Fisheries, Vancouver Aquarium. Taken by UAV from above 90 feet under NMFS research permit and FAA flight authorization. More information at http://www.fisheries.noaa.gov/podcasts/2015/10/uav_killer_whale.html

Photogrammetry image of an adult male Southern Resident killer whale (K21). These images are being used to measure growth and body condition of whales that can be individually recognized from the distinctive pigmentation of their gray saddle patches, which allows scientists to monitor their health. Credit: NOAA Fisheries, Vancouver Aquarium. Taken by UAV from above 90 feet under NMFS research permit and FAA flight authorization. More information at http://www.fisheries.noaa.gov/podcasts/2015/10/uav_killer_whale.html
Photogrammetry image of an adult male Southern Resident killer whale (K21). These images are being used to measure growth and body condition of whales that can be individually recognized from the distinctive pigmentation of their gray saddle patches, which allows scientists to monitor their health. Credit: NOAA Fisheries, Vancouver Aquarium. Taken by UAV from above 90 feet under NMFS research permit and FAA flight authorization. More information at http://www.fisheries.noaa.gov/podcasts/2015/10/uav_killer_whale.html

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