While collecting fishes at Clipperton Island, Limbaugh (1963) noted that juvenile Galapagos sharks surrounded the boat, with multiple individuals rushing at virtually anything trailing in the water and striking the boat bottom, oars, and marker buoys. The sharks were not slowed by rotenone (a fish toxin) or shark repellent, and some followed the boat into water so shallow that their backs were exposed.
Limbaugh (1963) observed juvenile Galapagos sharks surrounding a boat at Clipperton Island, where they aggressively pursued anything in the water, striking the boat's hull, oars, and buoys. The sharks were unaffected by rotenone (a fish toxin) or shark repellent, and some even ventured into shallow waters, exposing their backs.