1. Correction to: Genetic structure and diversity of the mustard hill coral Porites astreoides along the Florida Keys reef tract

   • Dominique N. Gallery
   • Michelle L. Green
   • Lauren T. Toth

   Correction 06 August 2021 Article: 71

2. Expanding coral reproductive knowledge using remotely operated vehicles (ROV): broadcast-spawning observations of mesophotic corals at the Flower Garden Banks

   • Marie E. Strader
   • Hannah E. Aichelman
   • Sarah W. Davies

   Short Communication 05 August 2021 Article: 70

   

3. The critically endangered bowmouth guitarfish (Rhina ancylostoma) in the open ocean with an associated tuna school

   • Fabien Forget
   • Jeff Muir

   Oceanarium 29 July 2021 Article: 69

   

4. A new species of pygmy Paroctopus Naef, 1923 (Cephalopoda: Octopodidae): the smallest southwestern Atlantic octopod, found in sea debris

   • Tatiana S. Leite
   • Erica A. G. Vidal
   • Manuel Haimovici

   Original Paper 27 July 2021 Article: 68

   

5. A new cave-dwelling genus and species of Nerillidae (Annelida) from the Ryukyu Islands, Japan

   • Katrine Worsaae
   • Malte J. Hansen
   • Yoshihisa Fujita

   Original Paper 21 July 2021 Article: 67

   

6. Noteworthy observations and records of rare bathyal gastropods from unusual habitats in Sagami Bay, Japan

   • Chong Chen
   • Hidetaka Nomaki

   Short Communication 17 July 2021 Article: 66

   

7. Morphology and reproductive biology of a new hermaphroditic Rhynchospio (Annelida: Spionidae) species brooding larvae on the parent’s dorsum

   • Vasily I. Radashevsky
   • Jin-Woo Choi

   Original Paper 14 July 2021 Article: 65

   

8. Leptochiton subrugatus sp. nov. (Mollusca: Polyplacophora) from low boreal waters of northern Pacific

   • Boris I. Sirenko
   • Julia D. Sigwart

   Original Paper Open access 13 July 2021 Article: 64

   

9. Genetic structure and diversity of the mustard hill coral Porites astreoides along the Florida Keys reef tract

   • Dominique N. Gallery
   • Michelle L. Green
   • Lauren T. Toth

   Original Paper Open access 09 July 2021 Article: 63

   

10. Scytalium herklotsi sp. nov. (Anthozoa, Octocorallia, Pennatulacea), the first Atlantic species in the genus Scytalium Herklots, 1858

    • Pablo J. López-González

    Original Paper 02 July 2021 Article: 62

    

11. Looking back to the future—micro- and nanoplankton diversity in the Greenland Sea

    • Malin Olofsson
    • Angela Wulff

    Original Paper Open access 28 June 2021 Article: 61

    

12. A little Z. rex: on the predatory habits of the emperor shrimp 

    • Arthur Anker
    • Yury Ivanov

    Short Communication 22 June 2021 Article: 60

    

13. Brooding comatulids from the southwestern Atlantic, Argentina (Echinodermata: Crinoidea)

    • Renata M. Pertossi
    • Pablo E. Penchazadeh
    • Mariano I. Martinez

    Original Paper 22 June 2021 Article: 59

    

14. Resolution of the Acroteriobatus leucospilus species complex, with a redescription of A. leucospilus (Norman, 1926) and descriptions of two new western Indian Ocean species of Acroteriobatus (Rhinopristiformes, Rhinobatidae)

    • Simon Weigmann
    • David A. Ebert
    • Bernard Séret

    Original Paper Open access 21 June 2021 Article: 58

    

15. Field observations on the behavioural ecology of the stout bobtail squid Rossia macrosoma (Cephalopoda: Sepiolidae) from Scottish waters

    • Christian Drerup
    • Andy Jackson
    • Gavan M. Cooke

    Short Communication Open access 21 June 2021 Article: 57