Isthmus Reef
★★★★☆
(1,324)
Isthmus Reef is a popular dive site on Catalina Island reachable only by boat. It’s a great site for open water students and newer divers due to its sheltered location and shallow depth.
There is an abundance of kelp fish species including garibaldi, sheepshead, senorita wrasse, and kelpfish. There are also plenty of sea urchins, sea stars, and gobies.
Dive Activity
Top Wildlife Sightings
Wildlife Sightings are Based on User Generated Content
iStock-Michael Zeigler
14 Sightings
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9
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AdobeStock_cherylvb
Garibaldi Damselfish
185 Sightings
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6
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6
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30
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20
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39
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17
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iStock-Global_Pics
Spiny Lobster
75 Sightings
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14
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12
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16
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12
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9
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Shutterstock-Henry_and_Laura_Whittaker
Grouper/Basslets
24 Sightings
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12
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12
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Alamy/Reinhard Dirscherl
Octopus
4 Sightings
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4
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Alamy-Alex Mustard
Seal
3 Sightings
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3
iStock/Extreme-Photographer
Stingrays
3 Sightings
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3
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