Isthmus Reef
★★★★☆
(1,337)
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
Potential Wildlife Sightings
Wildlife Sightings are Based on User Generated Content
AdobeStock_cherylvb
186 Sightings
J
7
F
6
M
6
A
19
M
12
J
30
J
19
A
10
S
21
O
39
N
17
D
0
The image shown is a representative illustration and does not depict every individual animal in this category.
Total number of species: 60
iStock-Global_Pics
Spiny Lobster
67 Sightings
J
7
F
0
M
0
A
0
M
5
J
14
J
12
A
0
S
17
O
12
N
0
D
0
The image shown is a representative illustration and does not depict every individual animal in this category.
Total number of species: 55
k
Lobster
40 Sightings
J
0
F
4
M
3
A
4
M
0
J
0
J
0
A
0
S
0
O
19
N
10
D
0
The image shown is a representative illustration and does not depict every individual animal in this category.
Total number of species: 250
Shutterstock-Henry_and_Laura_Whittaker
Grouper/Basslets
24 Sightings
J
0
F
0
M
0
A
12
M
0
J
0
J
0
A
0
S
0
O
12
N
0
D
0
