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Orange Sheath Tunicate - Botrylloides violaceus A colonial sea squirt that often overgrows mussels, barnacles, bryozoans, and solitary sea squirts.<br />
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This species is invasive and was likely introduced to the east coast from the Pacific Northwest. I found a bunch of these little blobs on the beach during low tide. When I saw the first one, I thought it was a piece of garbage and went to pick it up. I was surprised to find it was squishy, and quickly realized that it was some sort of creature!<br />
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Habitat: Rocky intertidal habitat (brown and red algal zones)<br />
<figure class="photo"><a href="https://www.jungledragon.com/image/80721/orange_sheath_tunicate_-_botrylloides_violaceus.html" title="Orange Sheath Tunicate - Botrylloides violaceus"><img src="https://s3.amazonaws.com/media.jungledragon.com/images/3232/80721_thumb.jpg?AWSAccessKeyId=05GMT0V3GWVNE7GGM1R2&Expires=1759968010&Signature=%2B9hwoU9wZ6royLCjT%2BO6Sj4hYI0%3D" width="130" height="152" alt="Orange Sheath Tunicate - Botrylloides violaceus A colonial sea squirt that often overgrows mussels, barnacles, bryozoans, and solitary sea squirts.<br />
<br />
This species is invasive and was likely introduced to the east coast from the Pacific Northwest. I found a bunch of these little blobs on the beach during low tide. When I saw the first one, I thought it was a piece of garbage and went to pick it up. I was surprised to find it was squishy, and quickly realized that it was some sort of creature!<br />
<br />
Habitat: Rocky intertidal habitat (brown and red algal zones) <br />
https://www.jungledragon.com/image/80710/orange_sheath_tunicate_-_botrylloides_violaceus.html Botrylloides violaceus,Geotagged,Orange Sheath Tunicate,Spring,United States,invasive species,sea squirt,tunicate" /></a></figure> Botrylloides,Botrylloides violaceus,Geotagged,Orange Sheath Tunicate,Spring,United States,sea squirt,tunicate Click/tap to enlarge PromotedSpecies introCountry intro

Orange Sheath Tunicate - Botrylloides violaceus

A colonial sea squirt that often overgrows mussels, barnacles, bryozoans, and solitary sea squirts.

This species is invasive and was likely introduced to the east coast from the Pacific Northwest. I found a bunch of these little blobs on the beach during low tide. When I saw the first one, I thought it was a piece of garbage and went to pick it up. I was surprised to find it was squishy, and quickly realized that it was some sort of creature!

Habitat: Rocky intertidal habitat (brown and red algal zones)

Orange Sheath Tunicate - Botrylloides violaceus A colonial sea squirt that often overgrows mussels, barnacles, bryozoans, and solitary sea squirts.<br />
<br />
This species is invasive and was likely introduced to the east coast from the Pacific Northwest. I found a bunch of these little blobs on the beach during low tide. When I saw the first one, I thought it was a piece of garbage and went to pick it up. I was surprised to find it was squishy, and quickly realized that it was some sort of creature!<br />
<br />
Habitat: Rocky intertidal habitat (brown and red algal zones) <br />
https://www.jungledragon.com/image/80710/orange_sheath_tunicate_-_botrylloides_violaceus.html Botrylloides violaceus,Geotagged,Orange Sheath Tunicate,Spring,United States,invasive species,sea squirt,tunicate

    comments (6)

  1. Fascinating Christine. Both visually and description of organism. A very special find. Posted 6 years ago
    1. Thanks Ruth, it was definitely a first for me and an interesting sight to see all these tiny orange sea squirts on the beach. Posted 6 years ago
  2. There's a citizen science/crowd sourcing project on Zooniverse that tracks these and other invasives in US waters - https://www.zooniverse.org/projects/serc/invader-id
    Posted 6 years ago
    1. Thanks so much for the link, morpheme! I'll check it out. Posted 6 years ago
  3. Really cool! And so funny that you first pick things up before checking what it is :) Posted 6 years ago
    1. Haha, I know. Hopefully I never regret that. The detail was hard to see in person, but as soon as I felt it, I was like, "ewww, nooo." Posted 6 years ago

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''Botrylloides violaceus'' is a colonial ascidian. It can be known by the common name 'Orange Sheath Tunicate' among others.

Similar species: Pleurogona
Species identified by Christine Young
View Christine Young's profile

By Christine Young

All rights reserved
Uploaded Jun 20, 2019. Captured Jun 18, 2019 07:32 in 1563 Post Rd, Wells, ME 04090, USA.
  • Canon EOS 80D
  • f/5.0
  • 1/395s
  • ISO100
  • 100mm