The genome sequence of the Basking Shark, <i>Cetorhinus maximus</i> (Gunnerus, 1765) (Lamniformes: Cetorhinidae)

We present a genome assembly from an individual female <i>Cetorhinus maximus</i> (Basking Shark; Chordata; Chondrichthyes; Lamniformes; Cetorhinidae). The assembly contains two haplotypes with total lengths of 3 993.85 megabases and 3 817.33 megabases. Most of haplotype 1 (88.16%) is scaffolded into 39 chromosomal pseudomolecules, including the X sex chromosome. Haplotype 2 was assembled to scaffold level. The mitochondrial genome has also been assembled, with a length of 16.67 kilobases. This assembly was generated as part of the Darwin Tree of Life project, which produces reference genomes for eukaryotic species found in Britain and Ireland.