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Monterey Bay Whale Watch
List of Marine Mammal Sightings
in the Monterey Bay Region

May 2023
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Note -- This list includes reported sightings from Monterey Bay Whale Watch trips. Unusual sightings of other marine animals such as Leatherback Sea Turtles and Basking Sharks are also listed, in addition to unusual seabirds such as Albatross and Brown Boobies. California Sea Lions are mentioned only if numbers or behavior are of interest. Harbor Seals and Southern Sea Otters, which are seen on all whale watching trips, are not included in the list.

These sightings are copyright protected and may not be used without permission from Nancy Black. All rights reserved. Unauthorized use of this information is a violation of federal copyright law, and is subject to prosecution to the full extent of the law.


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   Killer Whale identifications by the California Killer Whale Project
Date # Type of Animal(s)

5/31 9 a.m. 6 Humpback Whales (friendly and breaching)
  10 Risso's Dolphins

5/30 9 a.m. 3 Humpback Whales (friendly and kelping)
  30 Risso's Dolphins
  15 Harbor Porpoise
  1 Blue Shark

5/29 1:30 p.m. 3 Humpback Whales (breaching)
  300 Pacific White-sided Dolphins
  700 Risso's Dolphins
115 Northern Right Whale Dolphins

5/29 10 a.m. 6 Humpback Whales (tandem tail slapping)
  200 Pacific White-sided Dolphins
  700 Risso's Dolphins
200 Northern Right Whale Dolphins
  15 Harbor Porpoise
  1 Northern Fur Seal

5/29 9 a.m. 3 Humpback Whales (breaching, pec slapping)
  10 Harbor Porpoise

5/28 5:30 p.m. 1 Humpback Whale
  3 Killer Whales (Orcas - CA51's)
  1 Harbor Porpoise

5/28 2:30 p.m. 3 Killer Whales (Orcas - CA51's)

5/28 1:30 p.m. 2 Humpback Whales
  6 Killer Whales (Orcas - CA51's)

5/28 10 a.m. 3 Humpback Whales
  4 Killer Whales (Orcas - CA51's)
  40 Risso's Dolphins

5/28 9 a.m. 6 Humpback Whales
  4 Killer Whales (Orcas - CA51's)
  100 Risso's Dolphins
  20 Harbor Porpoise

5/27 1:30 p.m. 2 Humpback Whales
  15 Baird's Beaked Whales

5/27 10 a.m. 2 Humpback Whales
  15 Baird's Beaked Whales
  10 Risso's Dolphins

5/27 9 a.m. 3 Humpback Whales
  10 Baird's Beaked Whales
  20 Risso's Dolphins

5/27 8 a.m. 6 Humpback Whales
All Day 40+ Baird's Beaked Whales (breaching)
  100 Risso's Dolphins

5/26 9 a.m. 10 Humpback Whales
  15 Risso's Dolphins

5/26 8 a.m. 15 Humpback Whales
All Day 1 Blue Whale
  42 Risso's Dolphins
  1 Harbor Porpoise
  1 Dall's Porpoise
  4 Black-footed Albatross
  1 Red-footed Booby

5/25 9 a.m. 11 Humpback Whales
  1 Killer Whale (Orca - CA49B 'Richie')
  20 Risso's Dolphins

5/24 9 a.m. 3 Humpback Whales
  50 Pacific White-sided Dolphins
  70 Risso's Dolphins

5/23 1:30 p.m. 5 Humpback Whales
  20 Risso's Dolphins

5/23 9 a.m. 6 Humpback Whales
  1 Northern Fur Seal
  1 Elephant Seal

5/22 9 a.m. 6 Humpback Whales
  50 Risso's Dolphins

5/21 10 a.m. 4 Humpback Whales
  5 Killer Whales
  100 Risso's Dolphins

5/21 9 a.m. 3 Humpback Whales
  5 Killer Whales
  2 Blue Whales (mom & calf)
  15 Risso's Dolphins

5/21 8 a.m. 2 Humpback Whales (tail throwing, friendly)
All Day 5 Killer Whales
  10 Baird's Beaked Whales

5/20 1:30 p.m. 4 Humpback Whales
  5 Killer Whales

5/20 10 a.m. 4 Humpback Whales
  5 Killer Whales
  5 Harbor Porpoise

5/20 9 a.m. 4 Humpback Whales
  5 Killer Whales
  30 Harbor Porpoise

5/20 8 a.m. 8 Humpback Whales (tail throwing, friendly)
All Day 5 Killer Whales (CA49B, CA49C, CA49C1, CA122D, CA122D1)
  200 Risso's Dolphins

5/19 9 a.m. 7 Humpback Whales
  7 Killer Whales
  50 Pacific White-sided Dolphins
  450 Risso's Dolphins

5/19 8 a.m. 10 Humpback Whales
All Day 12 Killer Whales (CA51As, CA50B, CA20, CA54,
CA177, CA49B, CA122Ds, CA49Cs)
  50 Pacific White-sided Dolphins
  450 Risso's Dolphins

5/18 10 a.m. 10 Humpback Whales

5/18 9 a.m. 12 Humpback Whales
  15 Risso's Dolphins
  10 Harbor Porpoise

5/17 9 a.m. 5 Humpback Whales (breaching, pec slapping)
  8 Harbor Porpoise
  1 Northern Fur Seal

5/15 9 a.m. 7 Humpback Whales
  100 Pacific White-sided Dolphins
  200 Risso's Dolphins
75 Northern Right Whale Dolphins

5/15 8 a.m. 10 Humpback Whales
All Day 200 Pacific White-sided Dolphins
  800 Risso's Dolphins
75 Northern Right Whale Dolphins
  20 Harbor Porpoise

5/14 9 a.m. 11 Humpback Whales
  6 Harbor Porpoise
  1 Red-footed Booby

5/14 8 a.m. 14 Humpback Whales
All Day 150 Risso's Dolphins

5/13 9 a.m. 4 Humpback Whales
  5 Killer Whales
  30 Harbor Porpoise

5/13 8 a.m. 4 Humpback Whales
All Day 5 Killer Whales (CA51s)
  30 Harbor Porpoise

5/12 9 a.m. 21 Humpback Whales
  5 Harbor Porpoise

5/12 8 a.m. 20 Humpback Whales
All Day 10 Pacific White-sided Dolphins
  250 Risso's Dolphins
  50 Harbor Porpoise

5/11 1:30 p.m. 6 Humpback Whales

5/11 9 a.m. 10 Humpback Whales
  100 Pacific White-sided Dolphins
  300 Risso's Dolphins

5/11 8 a.m. 12 Humpback Whales
All Day 50 Risso's Dolphins

5/10 1:30 p.m. 8 Humpback Whales (lunge feeding)

5/10 9 a.m. 17 Humpback Whales (breaching calf)
  20 Risso's Dolphins

5/9 9 a.m. 12 Humpback Whales
  75 Pacific White-sided Dolphins
  300 Risso's Dolphins
10 Northern Right Whale Dolphins
  25 Harbor Porpoise

5/9 8 a.m. 18 Humpback Whales
All Day 300 Pacific White-sided Dolphins
  1500 Risso's Dolphins
  10 Dall's Porpoises

5/8 9 a.m. 3 Humpback Whales (including Snowy Owl)
  25 Pacific White-sided Dolphins
  300 Risso's Dolphins

5/8 8 a.m. 23 Humpback Whales
All Day 500 Risso's Dolphins

5/7 9 a.m. 6 Humpback Whales (including chronic breaching and tail throwing calf)
  150 Harbor Porpoise

5/7 8 a.m. 24 Humpback Whales
All Day 800 Pacific White-sided Dolphins
  2500 Risso's Dolphins
15 Northern Right Whale Dolphins

5/6 2:30 p.m. 9 Humpback Whales (breaching)
  10 Risso's Dolphins
2 Bottlenose Dolphins

5/6 10 a.m. 12 Humpback Whales (breaching)
  4 Harbor Porpoises

5/6 9 a.m. 12 Humpback Whales
  1 Harbor Porpoise

5/6 8 a.m. 24 Humpback Whales
All Day 300 Pacific White-sided Dolphins
  2000 Risso's Dolphins
50 Northern Right Whale Dolphins

5/4 10 a.m.   Humpback Whales
  11 Killer Whales

5/4 9 a.m. 13 Humpback Whales
  11 Killer Whales

5/4 8 a.m.   Humpback Whales
All Day 13 Killer Whales

5/3 9 a.m. 18 Humpback Whales
  30 Pacific White-sided Dolphins
  20 Risso's Dolphins
  2 Harbor Porpoises
  15 Dall's Porpoises

5/3 8 a.m. 32 Humpback Whales
All Day 10 Risso's Dolphins
  10 Harbor Porpoises

5/2 9 a.m. 33 Humpback Whales
  1 Blue Whale
  1 Risso's Dolphin

5/2 8 a.m.
All Day
42 Humpback Whales (friendly)

5/1 9 a.m. 9 Humpback Whales
  60 Risso's Dolphins
  3 Dall's Porpoises

  

Photos © 2023 Daniel Bianchetta




Blue Shark photo by daniel bianchetta
Blue Shark (May 30, 2023)

Harbor Porpoise close-up photo by daniel bianchetta
Harbor Porpoise (May 30, 2023)

Friendly Humpback whale surfacing by the boat,
with white pec fins glowing green under the water photo by daniel bianchetta
Friendly Humpback whale surfacing by the boat,
with white pec fins glowing green under the water
(May 30, 2023)

Killer Whale(Orca) close-up photo by daniel bianchetta
Killer Whale (Orca) close-up (May 28, 2023)

Killer Whale(Orca) tail photo by daniel bianchetta
Killer Whale (Orca) tail (May 28, 2023)

Breaching Risso's Dolphin photo by daniel bianchetta
Breaching Risso's Dolphin (May 27, 2023)

Blue Whale tail photo by daniel bianchetta
Blue Whale tail (May 26, 2023)

Velella Velella photo by daniel bianchetta
Velella Velella (By-the-wind sailors - (May 26, 2023)

Brown Pelican close-up photo by daniel bianchetta
Brown Pelican close-up (May 23, 2023)

Baird's Beaked Whales photo by daniel bianchetta
Baird's Beaked Whales (May 21, 2023)

Killer Whales photo by daniel bianchetta
Killer Whales (May 20, 2023)

Killer Whale spyhopping photo by daniel bianchetta
Killer Whale spyhopping (May 19, 2023)

Killer Whale photo by daniel bianchetta
Killer Whale (May 19, 2023)

Southern Sea Otter photo by daniel bianchetta
Southern Sea Otter (May 19, 2023)

Pelicans in flight photo by daniel bianchetta
Pelicans in flight (May 18, 2023)

Northern Fur Seal in jug handle position photo by daniel bianchetta
Northern Fur Seal in jug handle position (May 17, 2023)

Breaching Risso's Dolphin photo by daniel bianchetta
Breaching Risso's Dolphin (May 15, 2023)

Red Fur Harbor Seal, rare visitor from San Francisco with fur stained from oxide in the water photo by daniel bianchetta
Red Fur Harbor Seal, rare visitor from San Francisco
with fur stained from oxide in the water (May 15, 2023)

Red-footed Booby, rare in this area photo by daniel bianchetta
Red-footed Booby, rare in this area (May 15, 2023)

Killer Whales (Orcas) photo by daniel bianchetta
Killer Whales (Orcas - May 13, 2023)

Breaching Humpback Whale photo by daniel bianchetta
Breaching Humpback Whale (May10, 2023)

Humpback Whale pectoral fin slapping photo by daniel bianchetta
Velella Velalla (May 9, 2023)

Humpback Whale pectoral fin slapping photo by daniel bianchetta
Humpback Whale pectoral fin slapping (May 8, 2023)

Risso's Dolphin mother and very young calf with fetal folds photo by daniel bianchetta
Risso's Dolphin mother and very young calf
with fetal folds (May 8, 2023)

Sea Star and Sea Urchins photo by daniel bianchetta
Sea Star and Sea Urchins (May 7, 2023)

Northern Right Whale Dolphin photo by daniel bianchetta
Northern Right Whale Dolphin (May 6, 2023)

Humpback Whale tail sla photo by daniel bianchetta
Humpback Whale tail slap (May 6, 2023)

Killer Whales photo by daniel bianchetta
Killer Whales (May 4, 2023)

Killer Whale near Blackfin photo by daniel bianchetta
Killer Whale near Blackfin (May 4, 2023)

Pelicans plunge diving photo by daniel bianchetta
Pelicans plunge diving (May 3, 2023)

Resting Sea Otter wrapped in kelp photo by daniel bianchetta
Resting Sea Otter wrapped in kelp (May 3, 2023)

Humpback Whale named Lexus photo by daniel bianchetta
Humpback Whale identified as Lexus (May 3, 2023)


Photos © 2023 Daniel Bianchetta



Copyright © 2023 Monterey Bay Whale Watch, LLC. No use of the sightings information is permitted without prior approval.


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Copyright © 1997-2023 Monterey Bay Whale Watch, LLC. All rights reserved.
Photos © Daniel Bianchetta
Last updated June 9, 2023