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Whale Shark Spotted About 30 Miles Off Southern California Coast

Warmer waters from a regional marine heat wave with a likely strong El Niño are driving temporary northward movement of tropical marine species.

Overview

  • Commercial fish spotter Carl Sbarounis photographed and filmed a whale shark roughly 30 miles off the coast between Malibu and Santa Barbara Island and estimated it at 14 to 16 feet long.
  • Sbarounis also documented groups of rays in the same area, including tan-brown manta rays and gray spinetail (devil) rays that are normally found in warmer tropical waters.
  • Scientists say the sightings are linked to unusually warm sea temperatures caused by a year-long marine heat wave and a NOAA forecast that gives about a 75% chance of a strong El Niño this winter.
  • Whale sharks are filter feeders that eat plankton, have very small teeth, and are not considered dangerous to people, so the sighting poses little direct risk to swimmers or boaters.
  • Researchers expect many tropical visitors to move back south as surface waters cool, but they say repeated unusual sightings this season — including hammerheads and large bluefin tuna — show how warming can temporarily reshape local marine life.