We are open Thursday through Sunday,

To make a reservation-435-884-3874


Seabase is an in-land location for Utah diving and snorkeling. This geothermally heated, salt water, high altitude mini ocean with colorful tropical marine fish is the only one of its kind for SCUBA, snorkeling, and dive training. Whether you are feeding the beautiful French angel fish or observing the docile nurse sharks, you'll never believe you are in the middle of Utah. 

This time of the year, snorkeling is nearly as good as it is in the spring, summer and fall, especially when the sun is shining.  With a wetsuit, diving is fine!  It is only $20 per day to come to Seabase for snorkeling or SCUBA, and rentals are available, if you don't have your own gear- click on the "rentals" button on top of this page for all rental prices....or $5 for just hanging around, watching the fish get fed, and seeing the "water people" having fun.!

Normal Seabase Hours:

  We are open all year, Thursdays, Fridays, Saturdays and Sundays for the rest of the year. In the month of July,2014, we will be open every day by appointment EXCEPT the 10th, 11th, 12th and 13th, which will be reserved for a private event.  We hope that being open 7 days per week before and after those days will help with scheduling and be a fix for any problems this closure might cause. Be sure to let us know when you are going to be coming, however!

 by appointment:   435-884-3874

Thursdays & Fridays, 9 AM to 3 PM 

Saturdays & Sundays, 8 AM to 3:30 PM: If you are here after hours, it is a minimum of an ADDITIONAL $20/hour (or part of an hour) , and it is pretty dark in the water by 3:30, because the mountains are just west of us!!  

Mondays, Tuesdays and Wednesdays we are closed, but for groups, we can sometimes make arrangements-call to see if we can work around your schedule.

In July, we will be open:   Mondays, Tuesdays & Wednesdays, as well as Thursday and Friday from 9AM to 3PM by appointment and Saturday and Sunday from 8 to 3:30

We feed the fish at opening time, so try to come early and see the feeding-it is fun! (Let us know you are coming out).  The "Fish feeding fee" is included in the $20 day pass, if you are here at opening time, ( and it is only $5.00 per person-if you don't want to get in the water). Please only use "reef safe" sunblock in the water , for the safety of the sealife. It is available at Neptune Divers in Salt Lake City.

All minors (under 18 years of age) MUST either bring their parents or a waiver signed (by parents). The waiver is printable, from the bottom left of this page


To get to Seabase from Salt Lake City, go west on I-80, until exit 84, get off freeway, and turn left on frontage road, then left again (going away from the Great Salt Lake) on SR 138 (Do not cross any railroad tracks-if you do, you went too far) for 5 miles, then left again, into our driveway. 

We have been annexed into Grantsville City-and were given a new street address. (it was 9390 West,)

now , to find us, it is :

 Bonneville Seabase                                                                    1600 NORTH SR 138                                                                           Grantsville Utah 84029-1179

     which is much more logical.  You might add "milemarker 5" so even if you don't know the area, you can find us!  For snail mail, use P O Box 1179.

Google maps and other maps sites are often wrong, as are most GPS units-they will send you to our post office in Grantsville, or someplace even stranger.  If you still want to use your GPS, please use :

N: 40 degrees 38.784'

W: 112 degrees 31.475 '

 .   Watch for cattle on the road, as they get out of their designated spaces frequently, and they are not very smart..   


Non profit groups: you can get a discount on area use fees on Thursdays, Fridays, & Sundays

See some of our underwater life at Seabase on YouTube videos  !

the youtube video from China: http://www.youtube.com/watch?v=jfn04URoBso

or just look in youtube for Bonneville Seabase-a couple of guys from Idaho did a very nice video with their GoPro camera...

                                                           photo of sunrise by Lynn Findlay

                                                                             angelfish, by Linda

to contact us:  info@seabase.net    or call  


Seabase Conditions as of 4.17.2014

White Rocks Bay
Habitat Bay
The Abyss




Snorkel and Dive in Utah

all year, with tropical marine fish!

       Even though it is has been raining frequently, the worst  is ove, and the fish are coming to the surface to eat in the mornings again.  It is slowly warming up, and with a wetsuit it should be very good.  The temperature swings havw been bigger this year than ever before and the visibility is at 8.5 to 11 feet, & getting better daily,  The grouper that used to lurk under the platform in Whiterocks bay is getting very large-

.     The fish make it fun to be here, but --be aware it can get kicked up with a lot of divers, so do try to come early.  In the Abyss, the vis is usually a lot better, but there is not as much to see.  Seabase is a good snorkeling place, and the fish  get to the surface when the sun is shining, to eat lettuce from your fingers if you are not moving around enough to scare them.   Keep in touch so we can let you know when the water conditions change! (you can call 435-884-3874).

  It gets dark rather early, even at this time of year, and by 3 in the afternoon, the sun gets close to the mountain tops to the west- so come in the morning for the most fun. 

 Opening time, when we feed the fish is a good time to start! - 8AM on weekends, and 9 on Thursday and Friday and Holidays..

The bigger fish are now staying in White Rocks Bay, but not all- and there are alot of new baby porkfish and little butterfly fish outside by the teaching platforms.  There are friendly angel fish, monos, mullet, snappers, lookdown jacks and banner fish and a shark or two in Habitat Bay and White Rocks Bay..

We recommend a wetsuit.



     In the Abyss, if you are quiet and persistant, you might    find a few silver jennies and a bigeye soldier fish, definitely some mollies, and snails and tunicates.

   While you can see some of the fish from the surface, you can see a lot more if you are in the water and swimming slowly.  

     Habitat Bay has the "ship" wreck and the platforms. There are a lot of butterfly fish and porkfish around the structures..    The two nurse sharks can usually be found in the middle or North side of White Rocks Bay, or in Habitat Bay on the teaching platform, near the ship wreck, with a lot of brightly colored young pork fish and some monos swimming around them. 

    Abyss is usually a lot clearer-(but without many fish, not so much fun!)  And because the Abyss is deep and not very wide, it will feel much warmer than the bays.

    May '08


Photos by :

Lynn Findlay & Linda Nelson




Quick Links

Driving Directions

Child Waiver Updated 8-15-11


What's New

  "Divers Log" Section added to the Seabase web site. Read all about people's experiences at Seabase or submit you own comments.


Hours of Operations

Thursday and Friday - 9A-3P.
Saturday and Sunday - 8 A-3:30 P
Special Reservations Available for other day . 

  Call or e-mail for possibility of appointment.

Contact Seabase

E-mail - info@seabase.net
Local - 435.884.3874


Link Partners

Affiliate Link

Innovative Aquarium Systems



Photography by

Linda Nelson, Lynn Findlay and

Manta Vision

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