they adopt each other because they are able to help take care of each other and fend for each other and the more there are the less vulnerable they will be its a survival tactic that polar bears use.

polar bears would have never been endangered if humans didn't pollute the earth as much and if humans didn't use their fur as fashion

its crazy that orcas are destroying boats and its very dangerous for the orca and the people on the boat because the orca can get stuck in the boat and die from starvation and if the person doesn't know how to swim then than can drown or be eaten and way worse things can happen like if the person has weapons the could use them on the orca and possibly kill the orca but orca migrate in packs so I will be harder for them to fend for themselves and their boat and that just makes the orcas angry they might even attack them but the orcas probably think they people on the boats are threats and are trying to protect themselves but in reality they are just regular people trying to have a good time. Who knows what's they think they could even think they boat is food or maybe even they could have trauma from a person killing or taking one of their parents away from them and they want revenge. they could have been put in a captive area like sea world or something like that and they think that they are trying to take them back a lot of things could happen in the moment good things and bad things their is a lot of possibilities and a lot of outcomes. I'm going to do more research on this topic and I'll explain more.

most orcas just learn it from their peers and others really do want revenge on the boat an the people

well its not as easy as you think some materials that are stronger than others and some are lighter and heavier if the boat is to heavy than it won't float current boats are made out of fiberglass, wood, aluminum, and steel and you could use materials like carbon fiber and Kevlar for high strength-to-weight ratios, or traditional materials like steel, aluminum, and wood epoxy fiberglass but it would only make the boat a little bit stronger and it would make the boat heavier and on top of that it would cost more to make and it would be harder to manufacture a boat with all of those materials.