Other Marine Life

Besides whales there are many other forms of marine we see on our watches, here are just some of the more common sightings.

Atlantic White Sided Dolphins (Lagenorhynchus acutus)
Dolphins are a small toothed whale, 7-9 feet long and travel in groups or pods of 20-200 individuals.


Harbor Porpoise (Phocoena phocoena)
Another small toothed whale also traveling in pods, harbor porpoise are 3-5 feet long weighing 100-150 pounds.


Ocean Sunfish (Mola mola)
The largest bony fish species in the world, up to 10 feet in diameter and weighing up to 5,000 pounds.


Basking Shark (Cetorhinus maximus)
The second largest shark species, lengths up to 40 feet but they feed on plankton and don’t have any teeth in their mouth.

Harbor Seal (Phoca vitulina)

Very common closer to shore, especially around the Isles of Shoals and on the rocks in the Merrimack River, harbor seals are 5-7 feet long and can weigh up to 300 pounds.

Sea Birds
Northern Gannets, Shearwaters (Great, Cory’s, Sooty, Manx), Wilson Storm Petrels, Northern Fulmars, Phalaropes and more..