In the mid-Atlantic, baleen whale sightings typically occur during the colder months, with peak activity in December and January. Sightings of humpback and right whales usually decrease by late March through April. While occasional baleen whale sightings, particularly of fin whales, happen during warmer months, large groups are uncommon as summer approaches. Pelagic surveys during this time often focus on odontocetes like sperm whales and beaked whales.