Carpinteria's Seal Beach Closes December 1. Why Is the Colony Smaller Than It Used to Be?

How many seals do you expect to see from the bluff above Casitas Pier? If your answer comes from a walk ten or fifteen years ago, it is probably too high. The beach below the overlook closes to people and dogs on December 1, as it does every year. The colony that beach protects has gotten much smaller, and the reasons for that are now a live question in Carpinteria.

The 1,500 feet of sand holding the rookery is one of only two harbor seal breeding and pupping grounds left on the Southern California mainland, the Santa Barbara Independent reported in April. Most days, the same report said, fewer than 100 seals are on it.

The calendar hasn't moved, but the colony has

The closure rule is old and stable. Under City Ordinance #470, the rookery beach is closed from December 1 through May 31. The closed zone runs about 750 feet east and west of Casitas Pier and 1,000 feet out to sea, according to the City of Carpinteria's rookery page. From June through November the beach is open. Even then, the City asks visitors to stay well away from the pier and leave the animals alone.

The counts tell a different story. The Carpinteria Seal Watch volunteers have tracked the colony for about two decades, and three snapshots show the trend:

The pup column is the one to watch. From 2004 to 2021, Coastal View News reported, adults fell by about 40 percent while births stayed nearly level, 65 in 2004 and 64 in 2021. For years, then, the beach kept working as a nursery even as fewer adults hauled out on it. The 2026 season broke that pattern. Susan Mailheau, a veterinarian and member of the local nonprofit Save Our Seals, told the Independent that "this year alone" had half the pups the colony normally produces.

What the people on the overlook think is driving it

Save Our Seals formed around 2021. Its members were worried that seal habitat along the coast was disappearing fast. The group runs the Seal Watch volunteer program, which monitors the beach from November to May. Volunteers keep beachgoers and dogs from disturbing the rookery at low tide. On publish day that monitoring season is already underway. The docents on the bluff count seals and also count the people who stop at the overlook.

Mailheau and fellow member Randall Moon told the Independent that harbor seals have rookeries in Carpinteria going back more than 100 years. The seals show strong site fidelity: they spend their 25- to 30-year lives around the beach where they were born. The beach matters to them all year. They use it to regulate body temperature, digest, sleep, molt in summer and nurse their young. If a seal born at Casitas Pier is driven off that sand, it has no obvious replacement.

"The problem with our harbor seals is that the land that has been so perfectly suited to them for over 100 years has now become quite popular for beachgoing walkers, visitors, for people in town, and their dogs," Mailheau said in the Independent's report. In the group's view, people and dogs are the main source of the stress that disrupts breeding. One volunteer told the paper she has done a two-hour Monday shift for nearly 18 years and has seen the colony fall from about 400 to about 100 over that time.

The City has studied the decline too. In 2021 the Carpinteria City Council created the Harbor Seal Advisory Committee to study the decline, with community members serving alongside then-Vice Mayor Al Clark and Councilmember Roy Lee. In 2024 the committee recommended closing the beach for three full years to see whether the population would recover. The City and the California Coastal Commission both declined, saying a closure wasn't warranted. The committee is still asking for a three-year test, according to the Independent. So the December 1 date covers the only part of the year the City has agreed to close. The rest of the year is still under debate.

The walk to the overlook this winter

The viewing spot is on the bluff, not the sand, and getting there takes a little planning:

1. Park at 499 Linden Ave. This is the City's recommended lot for the Coastal Vista Trail.
2. Plan on about 1.3 miles each way. The route is fairly flat but unpaved, with dirt, decomposed granite and uneven ground. Wear real walking shoes.
3. Keep dogs leashed and stay on the bluff-top trail. The City asks for both all year, and from December 1 the beach below is closed to people and dogs.
4. Watch quietly. The City asks that the seals be viewed quietly from the bluff above the rookery.

Timing matters too. Carpinteria Seal Watch says pupping generally runs January through May. The closure starts a month before the first pups usually arrive, so a December walk shows the colony settling in, and pups are more likely from January on. The protection also doesn't end on May 31. Federal law bars approaching marine mammals at any time of year. The Independent reported penalties of up to $10,000 or a year in prison for disturbing the seals, and dog owners are responsible for what their dogs do.

If you would like to be one of the people on the overlook, Seal Watch lists (805) 364-3194 as its volunteer contact and says volunteers are always needed. Save Our Seals provides training through SaveCarpSeals.com.

What is being planned for the bluff behind the trail

The open land you walk across to reach the overlook is part of the same debate. A project called The Farm proposes 191 homes on 27 acres at 5669 and 5885 Carpinteria Avenue. The site includes the former Tee Time practice range and borders the Bluffs Nature Preserve and the rookery, Noozhawk reported. The applicant is Central Coast CA Ventures, LLC, on behalf of owner Carp Bluff, LLC. The plans call for 94 three-bedroom townhomes and 97 five-bedroom single-family homes, with 39 of the units set aside for low-income households.

The project is in environmental review. The City took public comment on the scope of its Environmental Impact Report from June 11 to July 10, 2026, and held a scoping meeting at City Hall on June 30. The City said that meeting was not a decision hearing. The Council hired Environmental Science Associates to prepare the report for up to $563,518. Coastal View News reported that the firm's EIR process usually takes about 13 months and includes several rounds of public comment. Save Our Seals has said publicly that it fears homes just north of the rookery would push the seals out. Comments on the draft EIR will be one formal way to raise that concern. To follow the project, the City's project page says to email [email protected] with the subject "Interested Party."

The preserve also has public money committed to it. Santa Barbara County supervisors approved an $800,000 agreement with the City for work at the Carpinteria and Rincon Bluffs Nature Preserves, paid in four annual installments of $200,000. The work covers trail restoration, invasive-plant removal, ADA paths, parking and public amenities, according to Coastal View News. Those are the same trails that lead to the overlook.

Where the dogs go while the beach is closed

Dogs need to stay off the rookery sand for the next six months, and Carpinteria's off-leash option is about to become permanent. On November 2, the Planning Commission unanimously approved plans for the permanent Monte Vista Dog Park. The plans include 5-foot black aluminum fencing around the 15,000-square-foot park, separate areas for large and small dogs, an ADA-accessible walkway, benches and drinking fountains, Coastal View News reported. The temporary park, open since April 2024, stays open until construction begins. The project's budget is $200,000. Quimby funds cover $150,000, and the City expects the Carpinteria Dog Owner Group, known as C-DOG, to raise the remaining $50,000 from the community.

A leashed walk to the overlook and an off-leash run at Monte Vista both keep dogs off the rookery sand, which is what the Seal Watch volunteers ask of every visitor during the monitoring season.

If you have walked these bluffs for decades and a change at home is starting to come into view, we would be glad to help. When a family starts thinking about what comes next for a home near this coast, Deborah Samuel and the SB SOS team can help with the whole plan, step by step, at an unhurried pace. Get your instant home valuation and downsizing plan whenever you are ready.