Mare Island Heritage Trust

06/24/2026

OK, here yah go! This weekend’s San Francisco Bay Osprey Days schedule. Please share. Please come out! The Sat afternoon and Sun morning San Francisco Bay Osprey Days Boat trips are still available to reserve 510-527-9622. Expect a delay in response after you call, till Fri. Read about it in my post. Feel free to call/text or dm me. 707-656-7852.

At LAST!!! An UPDATE on available boat trips( Sat 10am-12noon IS FULL!) But, rest assured that if you haven’t gotten confirmation for your reservations, I talked to Barbara from Dolphin early this afternoon, and since she’s basically in boat purgatory in WA state with their other Alaska-bound boat, she hasn’t gotten in touch with all of you, she WILL contact you by Friday. That’s several days, yet. Do not despair. Call or text me if you need some cheering. 707-656-6852. She is SUPER sorry!!!

AND, secondly, I was waiting and waiting on word from potential car caravan guides for Sat and Sun. Well, Myrna to the rescue.

I WILL GUIDE TWO caravan tours of our Osprey nests on Mare Island. Meet me that the following location both Sat and Sun.

Sat, Jun 27, 2026 meet me just beyond the traffic roundabout on Azuar Dr driving past the light at Rickover, past the Chapel and towards Touro University and the Mare Island Shoreline Heritage Preserve. Park along the street where I will meet you with a scope set up and binoculars to share. Lost? Late? Call/text Myrna 707-656-7852.

We will view one Osprey nest, then go on from there to a half dozen locations before ending at the Mare Island Brewing Co for the final nest. Dinner together or just hang out near that nest. You choose. You may also just meet us there if you can’t make the caravan.

Sun morning, Jun 28, 2026, 8:45am-10:30am, meet Myrna Hayes at location described above. Lost? Late? Call/text 797-656-7852.

NOTE: if there is interest, we can do another car caravan at 2 or 3 or 4pm Sunday, following the boat trip. Let me know with text or dm. Call/text 707-656-7852.

06/18/2026

Pretty thrilling! Our Mare Island Osprey and Bald Eagle nests are maturing again this season. I hope you’ll be planning to join us for our 14th Annual San Francisco Bay Osprey Days and San Francisco Bay Osprey Days Boat trips

06/12/2026

Hoping you can help me get this handicapped parking space spruced up with a restriping/repainting. AND, why not bring your broom along to help keep the parking spots free of gravel from the spinners.

04/23/2026

Hello People of the Mare Island Shoreline Heritage Preserve. This Sat April 25, 2026, 10am-1pm is our Spring Osprey and Napa River Mare Island nature and history boat trip. $50 per person. Reserve the last 5-10 seats. Call 510-527-9622. Leaves from Vallejo marina K Dock. This is a full 3 hours. I’ll join Barbara from Dolphin Charters as a River and Mare Island nature and history guide. Bring your brunch/lunch. Myrna Hayes 707-656-7852.

Btw: 4,813 people have viewed this post. Do you think 35 will fill the boat so the diesel fuel, which is at an all-time high, can be covered?!!

You’ve been asking and waiting. Here it is! Attached is the flier with details for our upcoming Spring Osprey, Mare Island History and Napa River/Mare Island Strait Boat Trip aboard River Dolphin, with Dolphin Charters and me, Myrna Hayes River Guide.

This is a longer, more lovely trip on the River as we’ll judge the water conditions and potentially go out into the Carquinez Strait a bit on the south side of the Island, then on up-river under the 2 bridges and travel on the Napa River past restored wetlands of the San Pablo Bay Delta, American Canyon, the widest part of the River and actually into the Edgerly Island neighborhood, a charming riverfront grouping of quaint homes and piers, some rather lavishly upgraded, and about at the Brasos Bridge, we’ll turn downbound for our return trip back to Vallejo.

Bring a brunch with your favorite foods and what you’d like to drink. We’ll plan on serving hot coffee, hot water for tea and cold water as is Dolphin Charters’ tradition. This is a very, very rare opportunity. People ask us often and anticipate these river cruises. The boat is a catamaran motor launch. It is Coast guard certified for 47 passengers, but we limit to around 35. River Dolphin features an intimate indoor salon with tables and benches and grand windows for breathtaking views and a bathroom. You may choose to take a seat up top on the sunny, windy deck. Please join us!

To reserve/register call Dolphin Charters directly at 510-527-9622. Leave a message. They DO get back to you. Other questions/details: Dm Myrna Hayes, text/call 707-656-7852.