Sea lions are back for their annual visit to B.C.’s Howe Sound and have taken over two private docks, sending a cacophony of barking and bellowing through West Vancouver.

West Vancouver Mayor Mark Sager admits people have complained to him about the ruckus.

“There are certainly people that call once in a while, I always encourage them to maybe put in an earplug and enjoy the symphony of the sea,” Sager said.

Last year, the sea lions took over a dock near Garrow Bay Park. The dock has been blocked off with a wooden fence surrounding it, preventing the animals from hanging out in the area.

“I think it’s actually a wonderful reflection of how the marine life in the Howe Sound has come back,” Sager said.

A man perches on the edge of a boat on a cloudy day.Alex Cole is pictured in Howe Sound on Jan. 14. He created a social media group to post sightings of marine wildlife in the region just north of Vancouver. (Ben Nelms/CBC)

Alex Cole lives near the docks and heard the sea lions’ arrival in December.

“They’re big, loud, stinky beasts, but they’re amazingly agile and they’re vocal, and they have big personalities,” Cole said.

Cole has created a Facebook group so people can share wildlife sightings in Howe Sound.

A group of sea lions are seen on a private dock.California and Steller sea lions are pictured on a private dock near West Vancouver in Howe Sound. The city’s mayor admits he’s gotten complaints over the noise, but he says that residents should try and enjoy the ‘symphony of the sea.’ (Ben Nelms/CBC)Steller versus California

Two species of sea lions showing up, both with distinct personalities and sounds, and their presence is a sign of a healthy ecosystem, according to experts.

Andrew Trites, director of the University of British Columbia’s Marine Mammal Research Unit, said Steller sea lions, which are native to B.C., are the largest of the six species of sea lions.

A brown sea lion is seen in a close-up.A Steller sea lion, seen here, is native to B.C. (Ben Nelms/CBC)

“The Stellers are very sensitive, and you wouldn’t think that the world’s biggest sea lion should be afraid of anything, and yet, at times, they seem to be afraid of their own shadows,” Trites said.

Steller sea lions can weigh up to 1,000 kilograms.

“You’ll hear their roars, but it’s just a much more subtle, I think, a more beautiful sound,” Trites said.

Two black sea lions roar at each other.California sea lions’ arrival was likened to that of a biker gang convention by UBC professor Andrew Trites. (Ben Nelms/CBC)

California sea lions also frequent B.C. waters this time of year.

“When they arrive, it’s almost like a biker gang convention. They just arrive out of nowhere, they cause havoc, they’re barking and belching,” Trites said.

A group of sea lions is seen on a dock.California sea lions are often louder than Steller sea lions, according to UBC professor Andrew Trites. (Ben Nelms/CBC)

The California sea lion is the louder species, he said.

“So if [people are] annoyed, it’s because of those California sea lions, it’s the Americans here barking, barking, barking,” Trites said. “We don’t know why they do it. They can’t help themselves.”

Two seals are seen on a rocky shore.A large amount of anchovies in Howe Sound is proving to be a boon for seals, like those seen here, in addition to sea lions. (Ben Nelms/CBC)

Large numbers of anchovies in recent years have been a game changer for Howe Sound around Squamish and Bowen Island, he said, bringing in sea lions, seals and humpback whales.

“It’s not a species that we ever thought of as being a common species,” Trites said. “It seems everyone likes to eat fatty fish.”

A seal lies, almost like a worm, on a mossy rock.A harbour seal is pictured in Howe Sound, a marine region just north of Vancouver. (Ben Nelms/CBC)Where do they go?

Trites said the California sea lions will typically be in B.C. waters from November to March, sometimes longer, and then head back to California where females are waiting.

“If you’re a sea lion, the bigger you are, the more attractive you are to the females,” he said.

A group of sea lions bellow on a private dock, with mansions visible in the background.The numbers of Steller sea lions is increasing in B.C., according to UBC professor Andrew Trites. (Ben Nelms/CBC)

Steller sea lions will travel to breeding areas in B.C., such as Triangle Island or the Scott Islands. Their population is believed to be roughly 43,000 and they are considered a species of special concern in Canada.

“They’re going to become more and more regular because their numbers are increasing,” said Trites.

A group of sea lions bellow on a dock.The sea lions have taken over docks in West Vancouver. (Ben Nelms/CBC)

Back in the 1980s, Trites said, Howe Sound was a wildlife desert and devoid of life.

“Today is a complete reversal,” he said. “This is something to rejoice in.”

PHOTOS | Marine wildlife makes its presence felt in Howe Sound:

He hopes people will celebrate their return and watch them from a distance, not to disturb them.

“It’s up to us to figure out how to continue to do it right so we can coexist with them,” Trites said.