Redondo Beach Submarine Canyon

I noticed this deep canyon on my Raven map of southern California. You can see it on Google maps.

Here’s what to expect when you dive the canyon:

After a short swim you drop down to a 25-30 foot sand bottom and move west. As you reach a depth of about 35 feet, you’ll start down a rather steep slope to about 75-80 feet, which quickly drops to below 100 feet and then to the abyss. This is the Redondo Submarine Canyon.

While the sand leading out to the canyon edge has a lot of marine life, most divers like the deep mud flats. Long before “muck diving” became popular with photographers at some fancy tropical resorts, southern California divers were visiting sand and mud flats at local submarine canyons. Just as with these resort destinations, our muck has much to offer in the critter department.

Look for small creatures like a camouflaged octopus or brightly colored nudibranchs, which can be spotted year-round. In late fall through winter months, lucky night divers can witness market squid mating in massive numbers. It’s been described as a blizzard of frantic activity. After the mating the seafloor will be carpeted in large clusters of white egg cases — and dead or dying adult squid, who kick the bucket shortly after they do the deed.

Whether it is squid season or not, this place is an excellent night dive with a lot of small animals to be seen.

One creature that can be found on nearly every dive, day or night, is the massive sheep crab. Its clumsy motions are comical to observe but watch out for the claws! Their pinch is insanely strong. The sheep crabs here are the biggest you’ll find anywhere along our coast. Some of them measure three feet across!

The city of Redondo Beach has two webcams to soothe in troubled times:

https://www.youtube.com/live/Ni7v-aIa3bw

https://www.youtube.com/live/2kbj3LqB_20