Eu assisti recentemente e pensei exatamente a mesma coisa. Olhando para ele um pouco, parece que a cena mostrando veloceraptors embarcando no barco foi raspada. O que faz sentido - todos os últimos 30 minutos pareciam fora de lugar!
Isto de A página do IMDB do Mundo Perdido: Jurrasic Park :
The script called for a scene where the Velociraptors got on board the Venture as it was about to set sail. As chaos ensued, the T-Rex also got loose, and killed everything else aboard. This explains why many of the crew members are dead in places the Rex cannot reach. The scene was never filmed.