Elkhorn Slough Photos

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Sea otters mating. The male holds the female's head or nose with his jaws during copulation. Visible scars are often present on females from this behavior. Sea otters have a polygynous mating system. Many males actively defend territories and will mate with females that inhabit their territory or seek out females in estrus if no territory is established. Males and females typically bond for the duration of estrus, or about 3 days, Enhydra lutris, Elkhorn Slough National Estuarine Research Reserve, Moss Landing, California
Sea otters mating. The male holds the female's head or nose with his jaws during copulation. Visible scars are often present on females from this behavior. Sea otters have a polygynous mating system. Many males actively defend territories and will mate with females that inhabit their territory or seek out females in estrus if no territory is established. Males and females typically bond for the duration of estrus, or about 3 days.
Species: Sea otter, Enhydra lutris
Location: Elkhorn Slough National Estuarine Research Reserve, Moss Landing, California
Image ID: 21606  
A sea otter, resting on its back, holding its paw out of the water for warmth. While the sea otter has extremely dense fur on its body, the fur is less dense on its head, arms and paws so it will hold these out of the cold water to conserve body heat, Enhydra lutris, Elkhorn Slough National Estuarine Research Reserve, Moss Landing, California
A sea otter, resting on its back, holding its paw out of the water for warmth. While the sea otter has extremely dense fur on its body, the fur is less dense on its head, arms and paws so it will hold these out of the cold water to conserve body heat.
Species: Sea otter, Enhydra lutris
Location: Elkhorn Slough National Estuarine Research Reserve, Moss Landing, California
Image ID: 21602  
A sea otter eats a clam that it has taken from the shallow sandy bottom of Elkhorn Slough. Because sea otters have such a high metabolic rate, they eat up to 30% of their body weight each day in the form of clams, mussels, urchins, crabs and abalone. Sea otters are the only known tool-using marine mammal, using a stone or old shell to open the shells of their prey as they float on their backs, Enhydra lutris, Elkhorn Slough National Estuarine Research Reserve, Moss Landing, California
A sea otter eats a clam that it has taken from the shallow sandy bottom of Elkhorn Slough. Because sea otters have such a high metabolic rate, they eat up to 30% of their body weight each day in the form of clams, mussels, urchins, crabs and abalone. Sea otters are the only known tool-using marine mammal, using a stone or old shell to open the shells of their prey as they float on their backs.
Species: Sea otter, Enhydra lutris
Location: Elkhorn Slough National Estuarine Research Reserve, Moss Landing, California
Image ID: 21612  
A sea otter resting, holding its paws out of the water to keep them warm and conserve body heat as it floats in cold ocean water, Enhydra lutris, Elkhorn Slough National Estuarine Research Reserve, Moss Landing, California
A sea otter resting, holding its paws out of the water to keep them warm and conserve body heat as it floats in cold ocean water.
Species: Sea otter, Enhydra lutris
Location: Elkhorn Slough National Estuarine Research Reserve, Moss Landing, California
Image ID: 21607  
A sea otter resting, holding its paws out of the water to keep them warm and conserve body heat as it floats in cold ocean water, Enhydra lutris, Elkhorn Slough National Estuarine Research Reserve, Moss Landing, California
A sea otter resting, holding its paws out of the water to keep them warm and conserve body heat as it floats in cold ocean water.
Species: Sea otter, Enhydra lutris
Location: Elkhorn Slough National Estuarine Research Reserve, Moss Landing, California
Image ID: 21614  
Sea otters, resting on the surface by lying on their backs, in a group known as a raft, Enhydra lutris, Elkhorn Slough National Estuarine Research Reserve, Moss Landing, California
Sea otters, resting on the surface by lying on their backs, in a group known as a raft.
Species: Sea otter, Enhydra lutris
Location: Elkhorn Slough National Estuarine Research Reserve, Moss Landing, California
Image ID: 21604  
A sea otter, resting on its back, grooms the fur on its head. A sea otter depends on its fur to keep it warm and afloat, and must groom its fur frequently, Enhydra lutris, Elkhorn Slough National Estuarine Research Reserve, Moss Landing, California
A sea otter, resting on its back, grooms the fur on its head. A sea otter depends on its fur to keep it warm and afloat, and must groom its fur frequently.
Species: Sea otter, Enhydra lutris
Location: Elkhorn Slough National Estuarine Research Reserve, Moss Landing, California
Image ID: 21605  
A sea otter, resting on its back, holding its paw out of the water for warmth. While the sea otter has extremely dense fur on its body, the fur is less dense on its head, arms and paws so it will hold these out of the cold water to conserve body heat, Enhydra lutris, Elkhorn Slough National Estuarine Research Reserve, Moss Landing, California
A sea otter, resting on its back, holding its paw out of the water for warmth. While the sea otter has extremely dense fur on its body, the fur is less dense on its head, arms and paws so it will hold these out of the cold water to conserve body heat.
Species: Sea otter, Enhydra lutris
Location: Elkhorn Slough National Estuarine Research Reserve, Moss Landing, California
Image ID: 21603  
A sea otter, resting on its back, holding its paw out of the water for warmth. While the sea otter has extremely dense fur on its body, the fur is less dense on its head, arms and paws so it will hold these out of the cold water to conserve body heat, Enhydra lutris, Elkhorn Slough National Estuarine Research Reserve, Moss Landing, California
A sea otter, resting on its back, holding its paw out of the water for warmth. While the sea otter has extremely dense fur on its body, the fur is less dense on its head, arms and paws so it will hold these out of the cold water to conserve body heat.
Species: Sea otter, Enhydra lutris
Location: Elkhorn Slough National Estuarine Research Reserve, Moss Landing, California
Image ID: 21608  
A sea otter, resting on its back, holding its paw out of the water for warmth. While the sea otter has extremely dense fur on its body, the fur is less dense on its head, arms and paws so it will hold these out of the cold water to conserve body heat, Enhydra lutris, Elkhorn Slough National Estuarine Research Reserve, Moss Landing, California
A sea otter, resting on its back, holding its paw out of the water for warmth. While the sea otter has extremely dense fur on its body, the fur is less dense on its head, arms and paws so it will hold these out of the cold water to conserve body heat.
Species: Sea otter, Enhydra lutris
Location: Elkhorn Slough National Estuarine Research Reserve, Moss Landing, California
Image ID: 21613  
A sea otter, resting and floating on its back, in Elkhorn Slough, Enhydra lutris, Elkhorn Slough National Estuarine Research Reserve, Moss Landing, California
A sea otter, resting and floating on its back, in Elkhorn Slough.
Species: Sea otter, Enhydra lutris
Location: Elkhorn Slough National Estuarine Research Reserve, Moss Landing, California
Image ID: 21615  
A sea otter resting, holding its paws out of the water to keep them warm and conserve body heat as it floats in cold ocean water, Enhydra lutris, Elkhorn Slough National Estuarine Research Reserve, Moss Landing, California
A sea otter resting, holding its paws out of the water to keep them warm and conserve body heat as it floats in cold ocean water.
Species: Sea otter, Enhydra lutris
Location: Elkhorn Slough National Estuarine Research Reserve, Moss Landing, California
Image ID: 21616  
A sea otter, resting on its back, holding its paw out of the water for warmth. While the sea otter has extremely dense fur on its body, the fur is less dense on its head, arms and paws so it will hold these out of the cold water to conserve body heat, Enhydra lutris, Elkhorn Slough National Estuarine Research Reserve, Moss Landing, California
A sea otter, resting on its back, holding its paw out of the water for warmth. While the sea otter has extremely dense fur on its body, the fur is less dense on its head, arms and paws so it will hold these out of the cold water to conserve body heat.
Species: Sea otter, Enhydra lutris
Location: Elkhorn Slough National Estuarine Research Reserve, Moss Landing, California
Image ID: 21618  
A sea otter eats a clam that it has taken from the shallow sandy bottom of Elkhorn Slough. Because sea otters have such a high metabolic rate, they eat up to 30% of their body weight each day in the form of clams, mussels, urchins, crabs and abalone. Sea otters are the only known tool-using marine mammal, using a stone or old shell to open the shells of their prey as they float on their backs, Enhydra lutris, Elkhorn Slough National Estuarine Research Reserve, Moss Landing, California
A sea otter eats a clam that it has taken from the shallow sandy bottom of Elkhorn Slough. Because sea otters have such a high metabolic rate, they eat up to 30% of their body weight each day in the form of clams, mussels, urchins, crabs and abalone. Sea otters are the only known tool-using marine mammal, using a stone or old shell to open the shells of their prey as they float on their backs.
Species: Sea otter, Enhydra lutris
Location: Elkhorn Slough National Estuarine Research Reserve, Moss Landing, California
Image ID: 21609  
A sea otter, resting on its back, grooms the fur on its head. A sea otter depends on its fur to keep it warm and afloat, and must groom its fur frequently, Enhydra lutris, Elkhorn Slough National Estuarine Research Reserve, Moss Landing, California
A sea otter, resting on its back, grooms the fur on its head. A sea otter depends on its fur to keep it warm and afloat, and must groom its fur frequently.
Species: Sea otter, Enhydra lutris
Location: Elkhorn Slough National Estuarine Research Reserve, Moss Landing, California
Image ID: 21610  
A sea otter, looking at the photographer as it forages for food in Elkhorn Slough, Enhydra lutris, Elkhorn Slough National Estuarine Research Reserve, Moss Landing, California
A sea otter, looking at the photographer as it forages for food in Elkhorn Slough.
Species: Sea otter, Enhydra lutris
Location: Elkhorn Slough National Estuarine Research Reserve, Moss Landing, California
Image ID: 21611  
A sea otter, resting and floating on its back, in Elkhorn Slough, Enhydra lutris, Elkhorn Slough National Estuarine Research Reserve, Moss Landing, California
A sea otter, resting and floating on its back, in Elkhorn Slough.
Species: Sea otter, Enhydra lutris
Location: Elkhorn Slough National Estuarine Research Reserve, Moss Landing, California
Image ID: 21617  
A sea otter, resting on its back, holding its paw out of the water for warmth. While the sea otter has extremely dense fur on its body, the fur is less dense on its head, arms and paws so it will hold these out of the cold water to conserve body heat, Enhydra lutris, Elkhorn Slough National Estuarine Research Reserve, Moss Landing, California
A sea otter, resting on its back, holding its paw out of the water for warmth. While the sea otter has extremely dense fur on its body, the fur is less dense on its head, arms and paws so it will hold these out of the cold water to conserve body heat.
Species: Sea otter, Enhydra lutris
Location: Elkhorn Slough National Estuarine Research Reserve, Moss Landing, California
Image ID: 21619  
A sea otter, resting and floating on its back, in Elkhorn Slough, Enhydra lutris, Elkhorn Slough National Estuarine Research Reserve, Moss Landing, California
A sea otter, resting and floating on its back, in Elkhorn Slough.
Species: Sea otter, Enhydra lutris
Location: Elkhorn Slough National Estuarine Research Reserve, Moss Landing, California
Image ID: 21620  
A sea otter, resting on its back, holding its paw out of the water for warmth. While the sea otter has extremely dense fur on its body, the fur is less dense on its head, arms and paws so it will hold these out of the cold water to conserve body heat, Enhydra lutris, Elkhorn Slough National Estuarine Research Reserve, Moss Landing, California
A sea otter, resting on its back, holding its paw out of the water for warmth. While the sea otter has extremely dense fur on its body, the fur is less dense on its head, arms and paws so it will hold these out of the cold water to conserve body heat.
Species: Sea otter, Enhydra lutris
Location: Elkhorn Slough National Estuarine Research Reserve, Moss Landing, California
Image ID: 21621  
A sea otter resting, holding its paws out of the water to keep them warm and conserve body heat as it floats in cold ocean water, Enhydra lutris, Elkhorn Slough National Estuarine Research Reserve, Moss Landing, California
A sea otter resting, holding its paws out of the water to keep them warm and conserve body heat as it floats in cold ocean water.
Species: Sea otter, Enhydra lutris
Location: Elkhorn Slough National Estuarine Research Reserve, Moss Landing, California
Image ID: 21629  
A sea otter, resting and floating on its back, in Elkhorn Slough, Enhydra lutris, Elkhorn Slough National Estuarine Research Reserve, Moss Landing, California
A sea otter, resting and floating on its back, in Elkhorn Slough.
Species: Sea otter, Enhydra lutris
Location: Elkhorn Slough National Estuarine Research Reserve, Moss Landing, California
Image ID: 21630  
A sea otter, resting on its back, holding its paw out of the water for warmth. While the sea otter has extremely dense fur on its body, the fur is less dense on its head, arms and paws so it will hold these out of the cold water to conserve body heat, Enhydra lutris, Elkhorn Slough National Estuarine Research Reserve, Moss Landing, California
A sea otter, resting on its back, holding its paw out of the water for warmth. While the sea otter has extremely dense fur on its body, the fur is less dense on its head, arms and paws so it will hold these out of the cold water to conserve body heat.
Species: Sea otter, Enhydra lutris
Location: Elkhorn Slough National Estuarine Research Reserve, Moss Landing, California
Image ID: 21631  
A sea otter, resting on its back, holding its paw out of the water for warmth. While the sea otter has extremely dense fur on its body, the fur is less dense on its head, arms and paws so it will hold these out of the cold water to conserve body heat, Enhydra lutris, Elkhorn Slough National Estuarine Research Reserve, Moss Landing, California
A sea otter, resting on its back, holding its paw out of the water for warmth. While the sea otter has extremely dense fur on its body, the fur is less dense on its head, arms and paws so it will hold these out of the cold water to conserve body heat.
Species: Sea otter, Enhydra lutris
Location: Elkhorn Slough National Estuarine Research Reserve, Moss Landing, California
Image ID: 21632  
A sea otter, resting on its back, holding its paw out of the water for warmth. While the sea otter has extremely dense fur on its body, the fur is less dense on its head, arms and paws so it will hold these out of the cold water to conserve body heat, Enhydra lutris, Elkhorn Slough National Estuarine Research Reserve, Moss Landing, California
A sea otter, resting on its back, holding its paw out of the water for warmth. While the sea otter has extremely dense fur on its body, the fur is less dense on its head, arms and paws so it will hold these out of the cold water to conserve body heat.
Species: Sea otter, Enhydra lutris
Location: Elkhorn Slough National Estuarine Research Reserve, Moss Landing, California
Image ID: 21633  
A sea otter, resting and floating on its back, in Elkhorn Slough, Enhydra lutris, Elkhorn Slough National Estuarine Research Reserve, Moss Landing, California
A sea otter, resting and floating on its back, in Elkhorn Slough.
Species: Sea otter, Enhydra lutris
Location: Elkhorn Slough National Estuarine Research Reserve, Moss Landing, California
Image ID: 21634  
A sea otter eats a clam that it has taken from the shallow sandy bottom of Elkhorn Slough. Because sea otters have such a high metabolic rate, they eat up to 30% of their body weight each day in the form of clams, mussels, urchins, crabs and abalone. Sea otters are the only known tool-using marine mammal, using a stone or old shell to open the shells of their prey as they float on their backs, Enhydra lutris, Elkhorn Slough National Estuarine Research Reserve, Moss Landing, California
A sea otter eats a clam that it has taken from the shallow sandy bottom of Elkhorn Slough. Because sea otters have such a high metabolic rate, they eat up to 30% of their body weight each day in the form of clams, mussels, urchins, crabs and abalone. Sea otters are the only known tool-using marine mammal, using a stone or old shell to open the shells of their prey as they float on their backs.
Species: Sea otter, Enhydra lutris
Location: Elkhorn Slough National Estuarine Research Reserve, Moss Landing, California
Image ID: 21622  
Sea otter, swimming at the ocean surface, Enhydra lutris, Elkhorn Slough National Estuarine Research Reserve, Moss Landing, California
Sea otter, swimming at the ocean surface.
Species: Sea otter, Enhydra lutris
Location: Elkhorn Slough National Estuarine Research Reserve, Moss Landing, California
Image ID: 21623  
A sea otter, resting on its back, holding its paw out of the water for warmth. While the sea otter has extremely dense fur on its body, the fur is less dense on its head, arms and paws so it will hold these out of the cold water to conserve body heat, Enhydra lutris, Elkhorn Slough National Estuarine Research Reserve, Moss Landing, California
A sea otter, resting on its back, holding its paw out of the water for warmth. While the sea otter has extremely dense fur on its body, the fur is less dense on its head, arms and paws so it will hold these out of the cold water to conserve body heat.
Species: Sea otter, Enhydra lutris
Location: Elkhorn Slough National Estuarine Research Reserve, Moss Landing, California
Image ID: 21624  
Sea otters, resting on the surface by lying on their backs, in a group known as a raft, Enhydra lutris, Elkhorn Slough National Estuarine Research Reserve, Moss Landing, California
Sea otters, resting on the surface by lying on their backs, in a group known as a raft.
Species: Sea otter, Enhydra lutris
Location: Elkhorn Slough National Estuarine Research Reserve, Moss Landing, California
Image ID: 21625  
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All photographs copyright © Phillip Colla / Oceanlight.com, all rights reserved worldwide.