100 M limit for what? All cetaceans?
Under the Canadian Marine Mammal Regulations the disturbance of whales is strictly prohibited. Summary convictions carry a fine of up to $100,000, a prison term not exceeding 12 months, or both. Indictable convictions carry fines up to $500,000, prison terms of up to 24 months, or both.
Under the US Marine Mammal Protection Act it is illegal to disturb or harass marine mammals. Penalties include a civil penalty of up to $10,000 for each violation or criminal prosecution with a fine of up to $20,000, or imprisonment for up to one year, or both.
Whales don't follow the rules.
If the whale approaches the boat, that's okay - operator must shut down motors and let the whale pass. Boat cannot approach a whale under its own power to a distance of less than 100 m. These two boats were on opposite sides of the whale and appear to both be within 100 m, so at least one must have approached too close. Applies to pretty much all marine mammals.
Single vessel -[HTML_REMOVED] "You should not approach any whales, dolphins or porpoises within 100 metres/yards. In Marine Protected Areas, such as the Robson Bight Ecological Reserve boats are not allowed. Check nautical charts for the location of various protected areas.
More than one vessel -[HTML_REMOVED] In addition to the single vessel guidelines, avoid any position that would result in encircling the whale(s). When parallel stay in a line on one side.
When one person suffers from a delusion, it is called insanity.
When many people suffer from a delusion, it is called religion.