Sea Star
Sea stars, also known as starfish, are a common sight in the coastal waters of Alaska. With their distinctive star shape and bright colors, they are a popular attraction for both tourists and locals. There are over 20 different species of sea stars that can be found in Alaska, ranging in size from just a few inches to over two feet in diameter.
One of the most common sea stars in Alaska is the sunflower star. These sea stars are named for their bright yellow or orange color and their distinctive rays, which resemble the petals of a sunflower. Sunflower stars are the largest sea stars in the world, although there is one sea star with longer arms. Sunflower stars have 16-24 arms and have been measured growing up to three feet in diameter. They are known for their voracious appetite and can consume up to 50 clams or other shellfish in a single day. Another common species of sea star in Alaska is the Ochre star. Ochre stars are typically found in tide pools and along rocky shorelines. They are known for their vibrant orange or purple color, and their ability to regenerate lost limbs. Ochre stars can regrow an entire arm if it is lost to a predator or other injury. |
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While sea stars are a popular attraction for tourists and beachcombers, they also play an important role in Alaska's coastal ecosystem. Sea stars are apex predators, meaning they are at the top of the food chain. By consuming other invertebrates like clams and sea urchins, sea stars help to keep their populations in check and prevent overgrazing of algae and other vegetation.
Unfortunately, sea stars in Alaska and elsewhere have been affected by a devastating disease known as sea star wasting syndrome. This disease causes sea stars to develop lesions and lose their limbs, eventually leading to death. Scientists are still working to understand the cause of this disease, but it is believed to be linked to environmental factors like temperature and water chemistry.
Luckily sea stars in Kachemak Bay have started to make a comeback in recent years and can again be seen in tide pools on many beaches.
Unfortunately, sea stars in Alaska and elsewhere have been affected by a devastating disease known as sea star wasting syndrome. This disease causes sea stars to develop lesions and lose their limbs, eventually leading to death. Scientists are still working to understand the cause of this disease, but it is believed to be linked to environmental factors like temperature and water chemistry.
Luckily sea stars in Kachemak Bay have started to make a comeback in recent years and can again be seen in tide pools on many beaches.