If you go: Diving guides off San Diego coast

Waterhorse Charters, 1617 Quivira Road, San Diego; (619) 224-6195, https://www.waterhorsecharters.com, offers dives on the Yukon, the Ruby E and other ships in San Diego’s Wreck Alley. A typical three-tank outing on its Humboldt dive boat costs $104 and includes air fills, tanks, food and beverages. Full rental gear costs $60. Other boats with trips to Wreck Alley include the Lois Ann, (800) 201-4381, https://www.loisann.com, and the Marissa, (619) 757-3280, https://www.marissadivetickets.com/Home_Page.html.

Guide services: Virginia Hatter, (703) 869-5617, [email protected]; or Nick LeBeouf, (619) 721-2092, [email protected]. Prices begin at $125.

Several other shops and outfitters also offer dive trips to La Jolla Cove, La Jolla Canyon at La Jolla Shores and the kelp forests off Point Loma. OEX Dive & Kayak, 2243 Avenida de la Playa, La Jolla, (858) 454-6195, https://www.oexcalifornia.com/lajolla. Other locations in Mission Beach and Oceanside.