21. Most of the seabed is more than in depth, covered with abyssal sediment. 22. It is native to the northeastern Atlantic Ocean where it occurs at abyssal depths. 23. Abyssal halosaur can reach total length of at least and weight in excess of.24. It is found in the abyssal zone in waters around Australia and New Zealand. 25. Intrusive rocks formed at greater depths are called plutonic or " abyssal ". 26. They are not generally found at abyssopelagic or hadopelagic depths or on the abyssal plain. 27. Pilkey began his career with the study of abyssal plains on the deep sea floor. 28. On 20 June 2014, a music video was made for " Abyssal March ". 29. The abyssal zone extends from to. 30. While Wellspring seeks to terraform Mars, Lindsay attempts to create an abyssal ecology on Europa.